Personally I'm a big fan of HD Collections and I would love for Nintendo to do them for some of their classics. The main problem is Nintendo went with regular discs for the Wii U so the HD Collections would have multiple discs. I realise this, but I still think its worth it.
1. Metroid Prime Trilogy HD - I know there is already a Metroid Prime Trilogy out, but its so god dam expensive and its not HD, I would love it if they rereleased it in HD.
2. 3D Mario HD Collection - I think this would really move Wii Us. It would have Super Mario 64, Super Mario Sunshine, Super Mario Galaxy 1, 2. Who wouldn't buy this I mean common.
3. Mario Kart HD Collection and Mario Party HD Collection - These two I'm on the fence about, are the Mario Kart games and Mario Party games different enough to include them in a HD Collection, I mean you don't want to include the same game with only minor differences in an HD Collection, ex. that is why Budokai 2 was missing from the Dragonball Z Budokai HD Collection. I think it would work with Mario Kart, I mean look at Double Dash, that was really different, but I don't think it would work with Mario Party, the games are just too similar.
4. The Legend of Zelda HD Collection - Like the 3D Mario one I think this one would really move Wii U's but seeing as Nintendo already did a Wind Waker HD and did it as a stand alone game I highly doubt we will see this.
5. This is not a HD Collection but just one game, I really want to see Xenoblade Chronicles HD. This is personal, just because I really want to play the game and its so god dam expensive in Canada.
What HD Collections do you want to see? Or if you don't want HD Collections say why.