I like your ideas but it wouldnt work... Let me explain.
The first x-men movie was a risk, this movie had to sell, be a success for all the other movies are created. This first movie also has the smallest budget than any of its sequels, why? well if you are a studio and someone wants to make a movie your unsure will be a success would you give him a few thousand or a few million to make it? The idea is simply if you can make an excellent movie with a small budget then you basically going to make some kick ass sequels on a bigger budget. That said the first movie was going to feature Beast and Blob but because of the budget those characters had to be dropped. So in order to make it cheaper you need to find characters that powers arnt necessarly easy to spot, for example, beast is blue, furry, big hands and big feat... Angel pretty normal except he has two wings that need to be animated, these two characters would be to costly for the first x-men movie, so instead look at cheaper effects, Lightening is easly simulated, telepathy cost nothing in special effects and as for wolverine and rogue well there pretty normal, wolverines claws could easly be replecated cheaply.
That said, i could of made the first x-men movie in line withe the comic origin... So let me explain.
X1 - Same story as the movie we already have but with a few character changes...
Cast...
X-Men
-----
Professor X
Cyclops
Jean Grey
Iceman - instead of being a student, his role would of been the comical character on the team that annoys wolverine.
Beast (Pre-Blue Fur) - is introduced as Dr.Hank McCoy in the medical lab but his role is minimal, he doesnt enter into combat or go out in the field.
Wolverine - like in the original story, is attacked by the brotherhood and awakes in xaviers school then later becomes temporary x-men
Previous member
---------------
Warren Worthing 3rd - will appear near the begining of the movie as a small cameo role, Replacing Jean Grey's intro... instead of Jean talking about the mutant registration act, Warren is doing it. the role is also extended to a brief encounter with xavier after xavier confronts magneto.
Students at the school
----------------------
young Storm - replacing Rogues role - explaing that mangeto's machine needs naturally electricity to power his machine.
young banshee - replacing the iceman role from the original movie, Banshee becomes a somewhat love intrest for the younger storm.
young colossus - just expanded to kid doing drawing, lifiting weights a few other scenes.
young Sunfire - replacing pyro's role
but no nightcrawler...
The Brotherhood
---------------
Magneto
Toad
Mastermind - acts as magneto's own personal charles xavier... Magneto realised that when he ended his friendship with xavier he needed someone with simular ability.
Mystique
Avalanche - Avalanche would take over from sabretooths role, this avalanche would be well muscled, excellent fighter but his ability causes the others he fight to lose there balance. There would be rivalry between avalanche and wolverine simular to how wolverine and sabretooth was.
Let me explain my reasoning, the way i see it and to make it cheap enough to make it explainable, the characters really come from between the original x-men and the second genisis where the others like storm banshee...blah blah blah is introduced as the second team, so we learn that the x-men has been going for sometime, Angel has left his x-men days behind to fight for mutant kind as Warren Worthington 3rd - a politician fighting against the mutant registration act. We also learn that most of the second genisus characters are already students at xaviers school, forshadowing a future where they'll become the next set of x-men one day, Storm would be younger and would have the role that rogue had from the first movie. The brotherhood would be exlained either by xavier of magneto that two members of his brotherhood betrayed him since then he has never really been able to trust any other new member of the brotherhood. This hinting to the two members being his own family Quicksilver and Scarlet Witch, we still see some of the original brotherhood in toad and mastermind...
X-Men 2 - again would be the same story, but the focus would of been more on wolverines past coming back to haunt him but he is still clueless why? Because of the success of the first x-men movie and that the budget would be higher for the sequel, we can now add characters like Nightcrawler, turning beast blue extra... some differences would be how the story played out.
Cast
----
X-Men
-----
Professor X
Cyclops
Jean Grey
Iceman
Beast
Wolverine
Storm - who is now fully trained to be an x-man
Nightcrawler - after rescued
Brotherhood
-----------
Magneto
Mystique
Avalanche
Stryker's special unit
----------------------
William Stryker
Mastermind - which we learn is Jason Stryker - altering the origin of the comic book character
Rogue - being controlled
Sabretooth - being controlled
Juggernaut - being controlled
Lady Deathstrike - being controlled
Stryker's captive mutants
-------------------------
a few of xaviers students
plus
Pyro
Destiny
Caliban
Morph
In this story we learn that Strykers special unit inflitrates the school and Stryker re-introduces himself and wolverines old friend Sabretooth, wolverine doesnt remember him and sabretooth is too drugged up to even recognise him. Beast becomes one of Strykers prisoners and causes beast to become blue fured by excellerating his mutantion. Stryker plans to use beast to make people fear mutants. But the plan backfires as Beast's mind remains intacked. As a result wolverine manages to free the prisoned mutants with the help of magneto, destiny informs pyro they must follow magneto because it is written. where as a reformed Rogue goes with the x-men.
The following would die
Jean Grey
Mastermind
Lady Deathstrike
Juggernaut
Sabretooth regains his memory and remembers wolverine but realises that wolverine doesnt remember so heads off, Wolverine is left to follow. leading to Wolverine spin off
X-Men Origins: Wolverine - would tell the tale that left off with x-men 2 Wolverine chases sabretooth across canada and finds Strykers old base, along the way we are introduced to Maverick, Dr.Cornelius who was believed dead, Silver fox, Kane and the whole weapon x project is revealed. The then learn that Logan is actually James Howlett and that he and Victor Creed were half brothers they both joined weapon x, a younger stryker gave him his claws, the conclusion of this movie would lead into x-men 3, which is totally different from The Last Stand... At the end of what i would of done for a wolverine movie, Wolverine would of chased down the person responsible for the creation of adimantium which turns out to be Nathaniel Essex, this is just a ploy to link the movie to x-men 3,
X-Men 3 - Now my story would be alot different that what actually occured, It still would of featured the Cure, but no Phoenix, well sort of let me explain, In my x-men 3 the story would play out simular, magneto is planning a war because the cure is deployed, we also have the return of a few minor characters. Warren leaves the goverment when they use the cure as a weapon.. but before he can return to the x-men it is revealed that he is a mutant and is given the cure thus losing his wings. The person responsible for the cure would be Nathaniel Essex who really has a sinister plan, the cure was designed to get rid of the weak mutants so only the geneticly perfect will continue the race. Nathaniel Essex then tries to deploy the cure on the Morlocks by force, his own maurders a team lead by Gambit. Essex meets with de-powered Angel, Essex believes Angel's wings were perfect and should not of had the cure so offers to fix this by giving him new ones. But this causes Angel to team up with Essex and his sinister plan. We now have three sides at war and one team trying to keep the peace. Magneto with his brotherhood, Sinister with his maurders and Goverment with Trasks.
Cast
----
X-Men
-----
Professor X
Cyclops
Beast
Iceman
Wolverine
Storm
Rogue
Shadowcat
Brotherhood
-----------
Magneto
Mystique
Destiney
Avalanche
Pyro
Blob
Muarders
--------
Mr Sinister
Gambit
Multipleman
Vertigo
Arclight
Arch-Angel
Sinisters prisoners
-------------------
Jean Grey - she is alive, rescued by Sinister
Morph - an escapee of strykers base in the second movie who is being tortured by sinister
The story would conclude when Jean Grey Breaks free and becomes the phoenix destroying sinister, most of the baddies, magneto becomes cured this would be simular to how last stand ended, except angel is left with metallic wings.
And that would be the end of the trilogy.
X-Factor Investigations
-----------------------
There would be a gap for a few years and then we would have X-Factor Investigations become a tv series, several years has passed and an Older Jamie Madrox now in his late 30's starts a mutant detective agency,
There would be an inital gap between the first trilogy than the next trilogy, basically we would do a Star Wars to the whole trilogy... X-Men The Origin
X-Men The Origin - would retell how xavier created the first x-men and why also cover the dispute between Magneto revealing that Magneto crippled him.
Brotherhood The Origin - Tells the story of Magneto as he goes in search of Magda, finds he has two children Quicksilver and Scarlet Witch, learning that humans caused the death of magda Magneto sets out to form the brotherhood and start his war... the story also takes him to Wondagor and he meets the high evolutionary who gives magneto the idea to turn all humans into mutants.
Finally the prequel trilogy would of ended with
X-Men: The Legacy - which is an origin story of Mr Sinister how he became sinister and how he effected the lives of nearly everyone in the x-men movie universe leading up to his appearance in x-men 3.
