It wasn't as terrible as other comic movies like The Spirit and Catwoman. But when compared to the first two, it definetely fell WAY short.
Overall, the plot was decent. The intepretation of "Dark Phoenix" was acceptable. Even the apparent "death" of Xavier was something that i could accept since he has "died" on numerous occasions in the books.
Besides being an overall ACCEPTABLE movie, they did TWO things which really ruined it for me:
1) WOLVERINE WOLVERINE WOLVERINE. And not just Wolverine... but whiny cry baby Wolverine. The studios had such a hard-on for Wolverine that they killed off Cyclops so the big drama finale cld be abt... you guessed it... Wolverine. Cyclops was never treated properly even in the first two films. But this blatant disregard for the character was too glaring to ignore.
2) TOO MUCH FAN SERVICE. On one hand, they don't care about the fans. Killing fan favorites such as Cyclops and Prof X. But at the same time they introduced so many mutants from the books, just for the sake of the fan service. And by that i mean, they were there just for the sake of being there. And even when they do shoehorn in mutants, they don't even do them right. Kid Omega with spikes??? random purple haired asian chick Psylocke??? fine. i get it. minor characters. no big deal. But what about ANGEL??? other than the fact his dad was backing the creation of the "mutant cure", Angel didnt have to be in the film AT ALL. He contributed NOTHING to the X-Men. As far as i remember, the only thing he did was save his dad from falling to his death. And let's not get started on "i'm the juggernaut b***h!"
In fact there are only TWO things i kinda liked about the film. Kelsey Grammer. And Iced-up Iceman.
Again, i don't HATE the film. I just didn't like it.