I think DKC4 would be better on WiiWare than DS, but they could do both.
I'm also hoping for the Gold/Silver remake.
I am really hoping Nintendo announces a title from one of their major franchises this E3. Zelda, Mario, Pikmin, Star Fox, something big for the fall.
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.