it came to my mind recently, wouldn't that be cool? especially one with all of the warioware characters as well as the major characters from the warioland games. i feel like many of them could have really interesting movesets, especially if it was packed with a story mode that makes them all interact :]
What would be the difference with Kirby Fighters 2 and Super Smash Bros?
EDIT:
My idea is make a fighting game with many WarioWare microgames, something like WarioWare stage from Super Smash Bros Brawl, but without making throw the characters out of the screen.
that'd be awesome, it could have some classic wario tunes from the whole series (SML2-GIT), and abilities that could be like final smashes from smash bros, hyper combos from marvel vs capcom, and super moves from injustice, and alternate outfits