The Wii has always been the weakest system for Rock Band. I feel much worse for the PlayStation 3 players where Rock Band 1 and 2 started out pretty much equal, then RBN came around built on the Xbox, then XMB crashes.
I know, your right about the wii... BUT<--- right now its about if it is profitable for HMX to continue supporting the game for the wii. I believe that a lego RB export to RB3 would be profitable they can do it but should they? The RB blitz songs 3 songs? and then they make a statement like buy these 3 songs like them or not and then we will decide to SELL you the rest? Thats just wrong.
Five of my favorite songs are now stuck in limbo and mostlikely will never be available.