Pump or pill? Jk. I'd ask him to try some of these ideas in the next zelda
1. Bring back and expand the Twilight Realm (GIMME MAH MIDNA!)
2. Make a realistic Zelda that doesn't overuse bloom effects.
3. Introduce a new baddy that has no association with Ganondorf.
4. Bring back great weapons like the Magnetic gloves, ball & chain, and spinner; and add new ones like a Farore's Wind-ish spell that can be used anywhere (portal gun lol)
5. Make the game optionally classic controller compatible and add the option of left or right handed.
6. Add the option of gender selection.
7. Add an optional continuation of the game after it's beaten, kinda like how you can get married and stuff after beating Alduin in Skyrim.
8. Give Link a partner with some personality who won't intervene to tell you stupid stuff like how to open a door; generally make it possible to easily skip cutscenes and paragraphs of text.
9. Add a multiplayer game mode consisting of a campaign-like mode (kinda like
FS, but with an actual storyline) and minigames like battling, horseraces, etc.
10. Whatever else another Zelda fan would suggest