If they come out with a slimline Arcade with 512mb-1GB of internal storage still at $199 I would buy it, and that is saying something as I never buy Microsoft products (save Windows).
Currently dreaming of: DKC4 or Sonic the Hedgehog 4 (classic 2D platformers) for WiiWare, Smash Bros. for DSi, New Super Mario World for DSi, a Wii remake or true sequel of Final Fantasy Tactics.
One down, hopefully more awesomeness to come.