For me, LoZ, ALTTP, Four Swords, Four Swords Adventures, Oracles games, Links Awakening, and Minish Cap would all be remade with the sprites and tiles similar to Minish Cap but with higher res GUI, similar to Four Swords Adventures. I think the gameboy advance aesthetic for 2D Zelda is under appreciated. I really wouldn’t want them to be made in 3D, and really would love to see a throwback to GBA era graphics. DS had similar graphics for a lot of games (Pokémon for example) but sometimes they tried to push it in a way I wouldn’t want particularly.

OoT and Majoras mask I’d probably want to see done the way the unreal engine OoT project has been doing it, with maybe a touch less realism.

Wind Waker and Twilight Princess (and Skyward Sword I suppose) just given the same treatment they already got to make them look good on whatever console would be out when it would happen.

Spirit Tracks, Phantom Hourglass (and A Link Between Worlds I suppose) I’m not sure how well they’d transfer to a single screen since I was never big on DS Zelda’s, but it’d be a good opportunity to make the models look a bit more like toon link and a little less fugly. Realistically, I’d want ST and PH to look graphically like Wind Waker HD.

BOTW and TOTK, since I suppose they’d have to be included, I’d just want to have graphical and frame rate improvements.