I for one did not like the pacing of the story, yes it helped move things fast but it was too fast.
Cyclops kisses jean, starts to demolecularize, Xavier tells Storm and Logan to to go to the lake and then they are at the lake, all within 20 second time frame.
And the way things were cut together, felt sloppy. Xavier dies, then all of a sudden its his funeral. It would've been better with Storm addressing the students that xavier is dead, while the eulogy she was giving to xavier would be playing and then slide into the funeral, where she was speaking.
its just little things like that to try to get the audience more into the characters that was off. cuz i think the storyline of the cure was a good idea, it sets up nicely for the cure turning out to be the legacy virus, but even with out that, it was a simple clear cut story, dialogue was off of course but so was the direction, which is why the fault lies in the writers first then the director, though i give brett credit, he came into the film late and was on a time frame. i think he did the best he could do with the time given to him.