War Peaceman
You're a big guy.
A Dawn of War 2 style squad-based RTS/RPG game would work in the Metroid universe, as long as Samus isn't the protagonist. Then again, by that point it's barely a Metroid game.
I would absolutely love that. Relic + Nintendo would be incredible. Although, I'd be more than happy to just take a Relic RTS on a Nintendo console; there is no need for everything to shoehorn everything in to the same old IPs.