I was over the X-Men franchise years and years ago. And that was before Marvel showed us how good a comic movie could be.
This movie breathed new life into X-Men. Would anyone seriously have believed that someone could step up to the plate and match McKellen and Stewart? Damn if Fassbender and McAvoy didn't do exactly that. Fassbender comes across as driven, principled, self-righteous... a man who was unfortunate enough to experience the world as it really is and understands the need to be ruthless when sheltered idealists hide from the truth. McAvoy is the perfect young Charles: a thoughtful man who knows the need for principle and sees the potential for cooperation because he can literally see into the hearts of men, and sees in his friend a good man who makes bad decisions because he's fighting his own demons, not the battle at hand.
The setting is the swinging early 60s and cold war politics, perfect for James Bond adventures. The soundtrack alone catches the theme perfectly, plus good writing and directing.
The supporting performances are mostly good. We had a good villain (albeit the stock predictable Nazi world-conquering baddie). Kevin Bacon plays him perfectly. Hoult and Byrne deliver excellent performances.
For all the grief she gets, Jennifer Lawrence did a great job as well. I think it was a mistake to make her the hinge for the rebooted franchise, much as too much of a good thing (wolverine) hampered the old edition. But her extreme body issues, unrequited love for Charles, and sheer loneliness gave her Mystique-ishness some depth and believability.
At the center of the story is the Erik/Charles bromance, and that worked very well. Overall a good movie, maybe the best in the rebooted series. I kind of wished they had stayed in this time period for a while instead of rushing headlong to the present.