I like your idea with the pawns, Jeremy. If Carlos wants to add that, then the frog from WKC would be a good one to add as a pawn instead as a piece, so to speak. I think your idea is definitely revolutionary and will add a very needed change to UC.
You bring up a very good point about the wuss. Maybe we could make a checkmate on the wuss a definitive end to the game, even if there are more kings than that on the board.
Talking about all of these kings, we may even do a randomization about which king starts out the game and then fill in the rest of the kings randomly into the jumble of other pieces. Just a thought.