I was playing around with the idea of using the Squadron Supreme Universe, but I don't know how well that would work. So... I'm taking underutilitzed or unused characters from one company and giving them to another. Retroactively putting them into continuity. For example, had I drafted Captain America, I would have put him back in WWII. I've got a few ideas, but there's a long way to go. But there's a TON of DC characters I think Marvel could do something with, so I'm starting off there.
The Flash (Wally West) - Former New Warrior, now New Avenger.