I would be interested in a game where Nintendo brought all their bounty hunter characters together and allowed you to choose your character for each mission or work co-operatively in multiplayer (e.g. Samus and Falcon joining forces to catch some crook).

This. Star Fox: Adventures is my favorite Zelda game that doesnt feature Link : p

The thing with Adventures is that it got treated as a main game, and not as some spin-off!

by default nintendo should be the winner every year.

A game similar to mighty final fight or double dragon!

I still believe that Black Shadow should be in Smash. F-Zero has many characters that are actually interesting, they should be represented in more than just strict racing.

F-Zero has some cool characters...
As long as it's done right, I would give it a shot...

A bounty hunting game. He goes around worlds/city hubs in search of criminals. A 3rd person beat em up, more complex than the Yakuza games (has environmental ways to inflict damage) but less complex than say Dmc or Bayonetta.

Also has racing elements too.

THAT would be the game for a Platinum Games partnership.

I'd love this, except I would rather an Arkham type combat system!

If they can make a Toad game then they could definitely make a Captain Falcon game.