Perfect Dark Zero would have been awesome on the Wii using the Wii Remote, a more polished game with extra development time, and would have appealed to a lot of hardcore gamers; Viva Pinata would have fit well with the Wii demographic; and a Banjo Kazooie game would have been a great addition to the Wii software library. Not to mention there could have been Joanna Dark and/or Banjo Kazooie in Brawl.
Ahh why did Nintendo have to sell Rare, or why did Microsoft have to buy them.....