It seems in many ways like Magik is as big as she can be now, with videogame appearances, a constant presence in the main X-Men books, and status in the Marvel mystic community. But there is a way to elevate her to true A-list status: Restore the no-kill rule she used to have.
It seems to have been forgotten that Illyana spared Belasco in the climatic moment of her origin, because she knew that killing him in anger would destroy what remained of her innocence and turn her into the Darkchild forever.
The fact that Illyana could not kill in anger without falling to the dark side was not just a central part of her origin, but of her character for the entirety of Claremont's run, and added a lot of depth to her character and decisions and emphasized the danger she posed.
Portraying Illyana as happy to kill betrays her origin and undermines the danger of her darkchild persona. It makes her a less interesting character.
Going back to the way Claremont wrote her as someone with a Jedi-like code about when she could kill - and never, ever in anger, would restore the depth missing from the way she's written currently in X-Men and make her a much better character.
Having something she has to struggle with and a line she cannot cross without losing herself would be the final piece of the puzzle to her fulfilling her true potential as a character. It will make her a better and more likeable character, and open far more story possibilities.
If Illyana once again cannot kill in anger without risking falling forever, if she once again will not kill unless absolutely necessary, if the thing currently sapping her depth is undone, the last barrier to her achieving true a-list status will no longer exist
The way to raise Illyana, raise Magik, to the next level, is to restore a core aspect of her character, her struggle, and everything she stands for that has been ignored for far too long. Bring back the no-kill rule, and Illyana will 'kill it' like never before.