I can't believe you're judging the fate of Wii Ware based on the 6 launch titles. GP said it, and she's right, the reason to buy Defend Your Castle on WiiWare instead of playing it on the web is the multiplayer. I've been having fun with it in single player and I would imagine that once you get it to the more hectic pace having 4 players going at it would be well worth 500 points. Also it runs full screen on the Wii Ware version as opposed to in a little Flash window, plus progressive scan/widescreen.
Crimm, I hate you for not just making me want Crystal Chronicles, but going as far as drawing comparisons between it and Pikmin, which is like twisting the knife of my not having the blocks for LostWinds, let alone Crystal Chronicles.