I wish they'd cut some extraneous characters out to give some more screen-time to developing relationships with the supporting cast. It made sense though since they needed 1 guy to die to inspire the kids to keep going (Darwin) and then another to join the Autobots to demonstrate the 'lines being drawn' at this tumultuous period in 'mutant history'/civil rights movement. The movie had the tough task of packing in all these themes, and characters and blah blah into like 1.5-2 hours? So I won't knock it unreasonably like some of the jackass hyper-intellectuals at the big newsrags but at the same time, I felt like there's been ensemble pieces that have been able to do the balancing act much better. That said, it's a comic book movie still and when I left the theater I felt like I had seen an actual X-Men movie for once. It felt like an episode of the early 90s cartoon before it got bastardized (new voices/animation/crap stories).
Loved the cameos. The Yellow costumes were cool actually, which is saying something because in the trailers I though Magnetos costume that we only see the back of, would be awesome. Then at the end, you see him standing there, and it looks like a size too big/doesn't emphasize his physique at all. He looks like a magician in a cape with a helmet on. Tacky! Then I remember, this is the 60s, and that specific design is accurate I believe. Still, I wanted it to be a bit more V-shaped in the torso. I bet Michael Fassbender was like (you've made me look cool this whole time only to turn me into a retarded magician at the end). And that last line? Even HE didn't like hearing it. It would read much cooler in a comic book, but the effect is unintentionally funny in the film.
The parts in the beginning with Fassbender getting revenge on the Nazis is the best part of the movie. Especially in Argentina, where he manipulates the knife. Very creative usage of the characters abilities. He and McAvoy were perfect. Both of them are legit actors too so it's unsurprising. Fassbender is going to be in the Alien spinoff-prequel (exists in same universe, before first movie so not a prequel technically). And he's done some pretty good work already (I think there's a movie he did called 'Control' - its on Netflix, about the IRA, true story, etc. good). He's also in another movie called 'Fish Tank' which is also on Netflix and he's good in that too. He totally understood the character.
All in all, a good movie. I wish somehow it'd be a HBO series with the same production values! That would be the only way to do it justice. I feel like we were seeing highlights from a TV series compressed into a film.