So does that mean you're going to write it? *enables*

Emma and Xavier: I agree, it could be fascinating. Especially as I think Charles wouldn't distrust her because she used to be a supervillain (hello, Erik!) but because he recognizes much of himself in her. And vice versa for Emma, of course. At the same time, they'd also have less of a problem in the whole hurt feelings section as Charles and many another X-men, including Scott. And of all the people who loved Jean - and Xavier did love her, a lot - he's the one, other than Hank, who just wouldn't either resent Emma for "taking her place" or project Jean into her. Neither option would occur to him.