First of all, I'm enjoying the Danger Room Tournament. But I think we all agree that it's a little unfair to movement based builds. And everybody don't have the ziggurat of Kargul.
My idea it's to have specifics Danger Room Tournaments for certain heroes. It's doesn't have to be just one heroe for tournament. It's can be... I don't know, five, ten heroes, a number that Gazillion can handle. And every hero with his own leaderboard. So you don't have to care about the others heroes time. For example, Iron Man just compete with another Iron Man, Rogue with another Rogue and She-hulk doesn't compete because nobody seems to play with her. So nobody has to have its powers delimited.
I don't know how hard to implement can be this, but I think it could be an improvement. I hope I explained correctly.