You know they would of had an awesome saga if they didn't rush everything.They should of added the Rhino in S-M2 as a cameo villain.In S-M3 it should of been Harry as the main villain as the Hobgoblin,then you throw Mysterio in as MJ's stalker who's holographic equipment can make him shapeshift.
And conclude John Jameson's character in the movie by having him confront Peter,but it's not Peter he is confronting,it's Mysterio.And when they fight,Mysterio's holographic equipment gets hit and Mysterio shapeshifts into spidey.
Then when Mysterio kills John Jameson,there could of been a witness with a video camera who hands over the tape to the Daily Bugle where JJJ's anger makes him create the Scorpion to kill spidey.
This would of been a better S-M3,it would of ended John Jameson's character,it would given MJ some new dimension to her character by showing an evil MJ(even though it would be Mysterio),it would of given us a better Harry vs Peter story,we would have the Scorpion.
Then in S-M4 you could introduce the symbiote giving us the black spider-man where spidey uses the symbiote to fight two villains at once(Lizard/Kraven).Then spidey could of been in the black suit through out the entire movie,and we could of seen him do his web swing through the city at the end of the movie in the black costume.Even throw in Shocker as a cameo villain because his sonic blasters would effect the symbiote in the fight.
In S-M5 then we could have the Sandman/Venom story where spidey takes the symbiote off right when the movie opens up giving us more Venom through out the movie instead of just the end of the movie.And you could throw in the Vulture at the beginning of the movie and show how black spidey almost killed him,and that's why spidey takes off the symbiote.
And in S-M6 we could of had the Sinister Six,by introducing a new actor for the Kingpin who is the leader of the mob,and wants to get rid of spidey,but Kingpin knows spidey is almost impossible to kill from watching all the villains that he has fought before.
So Kingpin creates the Sinister Six to go after spidey. (Doc Ock,Rhino,Scorpion,Mysterio,Sandman,Kraven)Plus we could of seen spidey fight the Kingpin.
But the way things have turned out S-M4 should be the Lizard/Kraven with a cameo villain like Rhino.
S-M5 could be where the Hobgoblin is the main villain even though it's not an Osborn,they could make the villain's identity unknown to the audience and we find out who is under the mask when spidey finds out.(It should be Harry's psychiatrist,it's a way to connect this villain to the previous movies.
Then you do the Mysterio stalker thing in this movie,and the Scorpion thing too.
S-M6 would still be the Kingpin and the Sinister Six.