MJ is a cow, but this proposed combo sucks.
From a movie perspective. I don't read Spider-Man.
Kirsten Dunst is awful. And Emma Stone had far more personality.
"I'm bad and that's good, I will never be good and that's not bad, because there's no one I rather be than me."
-Bad Guy Affirmation
Nothing against Kirsten Dunst, this is all on Raimi and the scriptwriters of the original trilogy for making such a godawful mess of my favorite regular human in the MU.