LOL Your guys' responses are smart yet funny as hell! Personally, I kind of agree. I think Halle is a better actress that Rebecca. (Love them both!) And I think Mystique could have been given more depth by Halle.. Yet Rebbecca gave Mystique more of that coldness that was also Awesome.
Halle Berry also would've made a good: Monet (back in the day.)
I WILL SAY IN HALLE'S DEFENSE:
I am looking forward to seeing her play Storm in Days of Future Past. She really seems like she's got an idea of who the character really is this time.