-A few more sidequests: A few more wouldn't hurt, but not so many that would make it too many.

-More difficulty: Much more. I think the only enemy that was tough in TP were Darknuts, but even then I didn't die 35 times like my first play through OoT.

-More puzzles in dungeons: I basically didn't ever get stuck. If I did, it was only for about ten minutes. It needs to have more challenges, and they need to think up of some new ones to get us stuck.

-A longer game: I expected a 70+ hour game, but... it didn't quite make it. I beat TP in like 43 hours and 30 minutes.

-Linearity: It really bugged me. It's like after a few dungeons, they pretty much just tell you where to go.

-The Overworld: To me, it is one of the most important things. But it should be more like OoT's, not sectioned off. And maybe a few more villages. Oh, and it should also be bigger.

I think that's it, unless there's something I can't think of.