Re: X-Men First Class v.s Captain America TFA
There was nothing rushed about CA.They can (and I'm guessing eventually will) revisit the WW II era eventually.(Baron Zemo!)
As for FC,in a way it did feel rushed to me,but I think not to have Charles disabled that way would've lessened the impact of the films conclusion.So I can't hold it against them,but I think it might've been handled better.
We always need to hear Both Sides of the story.
How did we get this far? Human beings have an immeasurable desire....for FF to return to Marvel.