Not gonna work. Kirsten's perfect as is as Mary Jane. Jessica's also smart enough to not get pidgeon-holed into superhero movies. I think if F4 stays on for more sequels which, given how Hollywood plans ahead they're probably setting the shooting for the next one as we speak, she'll ride this ticket while finding other ways to expand her acting creds along the way such as Indie flicks or dramas of some sort. Not that she couldn't fit into the Spiderman universe in a smaller role, Peter Parker had more girls after him than Mary J all these years you know.