I thought it was awful. Bad writing, horrible directing and GOD AWFUL cgi. This has to have had the worst cgi i've seen in a movie in a long while. No wonder FOX and the director had a falling out. He definitely shouldn't have been given a movie this big. All the supporting mutants were handled pretty badly and only in it for small periods. Outside of Sabretooth, none really served a real purpose. The whole deadpool fiasco was handled badly too. That wasn't deadpool...his "mouth" at the beginning was pretty accruate though.
Fox needs to hand over all marvel rights back to marvel, they don't know what they're doing.
Noland, Fabreau and Raimi (minus spiderman 3) know how to make superhero movies....that's about it.
37% on rottentomatoes...yeah, about right I'd say.