I watched this movie today. I thought it was fun. There wasn't any point where I was bored, and it entertained me enough to ignore some of the goofier elements.
The continuity errors I've just chosen to ignore. It doesn't fit, and it won't fit. Characters exist in multiple timelines for no reason. The time travel doesn't help or hurt the process in my opinion because things have already been ripped to shreds. There are two Trasks, two Angels, two Emma Frosts, two Hank McCoys. Some of it could possibly be the result of time travel, but a lot of it can't.
The most bizarre thing about the series is the power that Jennifer Lawrence has had over it. The series hit the jackpot with Lawrence a) being a pretty great actress and b) being a superstar. But the problem with that is that she ended up being such a superstar that they had to make her the focus of the whole universe. In DOFP, she's the key to the whole sentinel project. In this one, she's basically a messiah figure for the mutants. It's a wonder she wasn't chosen to be one of the horsemen.
The other bizarre thing is how little understanding I had for Apocalypse, his motives, or his power set. It's almost a little bit like Scarlet Witch. I could probably write a paragraph about what I think his powers are, but it's just a guess. Apocalypse seemed really powerful, and the movie said he was really powerful. But he never seemed to really put anyone in any danger. He seemed powerful enough to hold people off, but it was Magneto who was really destroying the world.
And his plan seemed a little confusing. If the plan is steal Charles' power and control everyone, why would he want/need Magneto to destroy everything? If the plan was to destroy everything in some sort of "only the strong survive" scenario, I don't see how some mutants would have any more ability to survive than normal humans. Charles, for example, is crazy powerful, but Stryker would be much more likely to escape the chaos caused by Magneto.
I was also surprised that we saw Wolverine as much as we did. And I was also surprised that the Mystique twist at the end of DOFP didn't go anywhere. I mean Singer made both films. Did he just forget?
But it seems like the movies are going in a cool direction. They have a big enough / young enough cast that they really just need McAvoy to keep coming back. If they can get Gambit off the ground, then maybe he can be the new Wolverine to appear in most movies.
But, yeah, I'd maybe like to see another voice get to do this. I don't know if Singer is burned out, but Matthew Vaughn did a great job with First Class. Having him do another one or letting someone young give it a shot could be cool.