The sad truth is, if Marvel ever gets the rights back to Spidey or X-Men, they will be threadbare and run into the ground.
Fox is set to bring the X-Men total up to at least 10 (The original X-trilogy, a First Class trilogy, a Wolverine trilogy and a Deadpool film.) while Sony will at least fire off Six Spider-Man movies, in the process using the vast majority of Spidey's better rogues.
If Marvel ever gets back either of these properties, they'll have to sit on them a while for people to want to see another film in either franchise.
Marvel has already proven that they aren't FOX. When they got the Hulk back they hit the ground running. And both X-men and Spidey are much bigger properties than the Hulk.
So if Marvel was to miraculously win the rights back for either of those franchises, I'm certain we'd see the integration into the MCU within the next year. Be it a shot of the Dailey Bugle or Oscorp building from Spidey or a reference Westchester NY from X-men.
Remember that we're not talking about Blade or Punisher, these two icon's are hard hitters.
Sebastian Shaw was basically Mister Sinister in X-Men: First Class, and I don't see Fox ever doing Apocalypse.
Doing nothing good anyway.
Fox's Sebastian Shaw was basically Kevin Bacon, not Kevin Bacon playing Sebastian Shaw.
Note:Kevin Bacon was bad, only his scrip.
Man, how I hope The Wolverine flops.. (Please, do not pay to watch it!)
Mr. Jackman; you've done your part, let it go.
The X-Men franchise is a serious cluster****, do even Fox have any idea what the relations between the original trilogy, First Class and Wolverine are?
About FF, I actually don't care about Fox keeping them, the first movie(s) was/were so legendary bad, I'm sure I could never enjoy them, no matter how good a film was made.
Have faith my friend.
1)Fox has some tough competition on and around that release date.(Smurfs 2, RED 2 and 300 pt2 to name a few)
2)The summer will be winding down
3)I doubt The Wolverine has a Nolan-esk script or director backing them.
4)And people still remember the first Wolverine film.
As for F4, it's not so much the team that I crave as much as their supporting cast that would add a huge boost to the MCU. Whereas the best we'd get from FOX is just a somewhat decent F4 film if they bothered to apply themselves.