I had a thought for a game idea the other day and I figured I'd share since it's kinda K. Rool related. I was thinking of a hypothetical Mario themed Stealth game, staring Wario and Waluigi (giving him some non sport/spinoff love) as well as Captain Syrup and Kaptain K. Rool as 3rd and 4th characters to choose from. Like imagining have to pull off a heist in the Mushroom Kingdom and beyond, avoiding various guards as you break into iconic Nintendo places such as Peach's Castle, the Kongo Bongo, and even Bowser's Fortress as you plunder coins, stars and other valuable items.
I thought of Wario being a physical specialist and the strongman of the group, Waluigi specializing in explosives and traps, Syrup performing feats of acrobatics or stealth to bypass normal defenses, and K. Rool being able to command Kremling Kutthroat minions and use projectiles.
If Captain Syrup is -too- far out there for obscurity, alternatively, you could take Daisy in a new direction and turn her into a bad girl if only to differentiate herself from Peach. A 'Queen of Thieves' approach.
I had the thought of potential characters for this idea, and I'd like to reserve Bowser and the Koopalings as bosses and people to steal from, even as the ultimate heist. K. Rool came to mind after following him for so long, and his Pirate persona would fit great into such a game. He'd likely task Wario and Waluigi in stealing Donkey Kong's banana hoard to prove that they are competent thieves before helping K. Rool steal the Crystal Coconut, and then allowing the Wario Bros to use his ship and his Kremling krew. Never hurts to give the King more exposure, even if it's not necessarily in a DK game.