Part of the reason I favour the Windows characters like McZee and Clippy over Rare characters in the context of Smash, a CTR guest grand prix, or other Scrimblo-adjacent Microsoft crossovers is because the Rare characters still have worlds and followings to build games with - the Windows characters only exist because of misinterpreted research and have no place in modern Microsoft products now that they're proven ineffective, and there isn't really a "Windows universe" to make a wacky spin-off out of, so crossovers in games are the only place these really cool and iconic characters could ever thrive now.