I probably won't buy Brawl, however, I may keep them around just in case.
If you look on ebay, wavebirds are selling for $20+. I sold my last two when I bought my Wii in Feb for $23 and $24.
The memory I was going to give away with MP2 as it won't sell for that much anyways.
There is a pretty high demand for the Zelda compilation disc as that was never actually in retail. Plus, I would rather buy Zelda and Zelda II on VC for $10 later so, no biggie selling this game. Zelda:oot and Zelda:mm I don't think i would play a second time.
The only game I am currently keeping that I still may never replay is Zelda:TP. But, I may do that again if there are no other games to play at that time.
I really don't think I will buy/rent any gc games and if anyone wants to buy me a game gift it will be a Wii game.
So, I think, for now selling everything but the wavebirds will be a done deal as you make a good point about Brawl. I will have to read reviews of the game using the classic controller to see which is better.