Something like Smash Bros actually, but I'd eventually figured that was definitely out of flash's league. A decent Double Dragon/Battletoads-like game is plausible though -so yes, like a platformer as well. If I look around, I think I'll still have the plans on paper for a pseudo-3D level.
If you can help me out with that sometime, I'd be grateful! Still though, it might be sometime before I can devote a good amount of time to it again. :/