I actually think that WW should go to the Wii-U.
Seriously, this game has so much room to put new stuff in. The world is big enough - and the islands bare enough - for them to add a ♥♥♥♥load of new content that wouldn't be possible in a game like
OoT or
MM (where the worlds AREN'T big enough). At least half of the islands are pretty empty, so I think adding a bunch of side content while keeping the main quest still mostly intact would make for a great remake.
Mainly because the world is screaming for more to do. I mean, who wouldn't love some sidequests/background information added onto Greatfish Isle (or any other isle for that matter)?
I think that this game wouldn't do too well on the 3DS, though, because I don't think it would be able to handle many revisions to the game. The graphics would be about the same and the cartridge may not hold the amount of data needed to add stuff onto WW.
I'd honestly prefer a
MM remake at this point. WW should be for the Wii-U or the next handheld system.