I love the F13 movies, and used to play Terrordrome as well, but I would never want to see Jason in MK. The two are so far removed that there's no way it could work.
What I'd love to see though, and I've brought it up once before, is a game like Terrordrome made into a proper fighter. That would be awesome, but unfortunately something no company would ever make.
if he was put into the game he would obviously have to be balanced for gameplay purposes.
remember from the movies, Jasons mother told him "no matter what they do to you, you can never die."