Ice Climbers are so heavily reliant on their teamwork that separating them is essentially the same thing as cutting them and replacing them with a new character.

Huh. I always thought it was taking a page from the Brawl mods, only making it better by providing new moves.

Well, waddya know. The same limitations that prevented the Ice Climbers from being in gave us one of the best things about the new games. Truly bittersweet.