I hate to be that guy but...Ocarina of Time. The 3DS "remakes" were not what I expected for a remake of Ocarina. A full blown remake without re-using any assets or textures, fully HD, etc. would be on the top of my list. I personally think Nintendo doesn't want to remake it because they don't want to see Dead Hand in HD and hey....I don't blame them
Really, with Square making such a huge, ambitious deal of their own all-time classic; Final Fantasy VII, Nintendo can't really stay behind with Ocarina of Time. I'd welcome a huge reimagining of Ocarina.