I recently picked up Double Action: Boogaloo and was very entertained and excited by the dives, slides, and rolls you can do in combat. As of playing the game, I love the free-fall fighting on Rooftops. I (And I'm sure countless others) would love to see a game mode of you and others falling from the skies and battling on the way down. I might be the first one to make a thread of the idea, but I'm certainly not the first to think about it.
Hope it makes its way into the game.
~NOTSkulls