I would love to see Mario 64 get the Crash/Spyro treatment. Mario 64 is also one of my favorite games of all time,and I would love to be able to play it again with modern visuals, and controls updated to take advantage of modern controllers.
Donkey Kong 64 is another title I really enjoyed as a kid, and would really like to see reach it's full potential with a remake.
Finally, I would like to see Diddy Kong Racing.
I want all these titles to be remade in original form, with modern graphics and control tweaks. No additions, no extras. Just give us the original as it was. Any additions can be delivered in a proper new titles after the release of the remake.
I had completely forgotten about Diddy Kong Racing. The main issue with that is the game has characters from Rare, which are owned by Microsoft. Microsoft would need to sign off on it OR somehow convince Nintendo to also release the game on the Xbox. Diddy Kong Racing I remember being a lot more fun than Mario Kart 64 with it having a story, more vehicles, more levels, etc.
Mario 64 getting the Crash/Spyro treatment would be cool to see. I'd see it having the extra content from Mario 64 DS.