Originally Posted by
Basara
Mystique is not a D list X-Men character. She's one of their greatest enemies. I easily put her in their top 5 worst enemies category. She's been major trouble for the X-Men every time she's shown up. It made sense for her to be Magneto's right hand lady in the original movie trilogy. It made sense for her to be a big part of Days of Future Past.
Now, making her the childhood friend of Charles Xavier and shoehorning her in as one of the original X-Men in First Class didn't make much sense to me, but it did show how she and Magneto teamed up. I could accept that she and Magneto tried it Xavier's way and then left to become their greatest enemies.
But bringing her back into the X-Men because the studios wanted to capitalize on J-Law's star power is perhaps the biggest sin of Apocalypse and will be one reason why Dark Phoenix won't be so good. I might be wrong, but I'm likely not.