Your ideas of what should be implemented in a Mario game/Your Mario game ideas.

Not unless he gets kidnapped.
 
Kamek is always nearby
 
Yeah, Baby Luigi. Kamek isn't an infected.
 
He's waiting for the right moment to swoop in.
 
What's with the Baby Luigi torturing?

A game in which Wario and Waluigi are henchmen of Bowser and they are recurring bosses and in the final fight they fight together. This is of course an idea for a game that is unlikely to happen.
 
It's fun to tease BLOF
 
I don't want to see other villains relegated to Bowser's minions to be honest. Antasma was bad enough, no need to take a villain that's established to be his own thing (or in Wario/Waluigi's case, their own thing) and throw them in Bowser's army just because. Yes, I know about King Boo and that was a shame too. He had lots of potential to be his own villain like he was in the Luigi's Mansion games. But I consider Bowser's King Boo to be a different one since they look different.
 
Just have them be hired help. It's not like they do anything all that villainous anyway.