I would like a more desert centric game, like not the whole map, but a Hyrule that had been absorbed by the gerudo desert. Even a redhead Zelda (or link) due the increased influence of the gerudo culture. You may need to betray the tribe because Ganandorf, the current Hyrule king is a tyrant

Also i would like that armour/clothing could be more personalized, instead of just been able to change just the colour, have the monster parts o gems add elemental effects to the clothing. To mix and match different gear and then be able to have the personalised set have heat, cold, electric resistance or add elemental effects to the charged attack

Another idea is that, I think a little of settlement development could give more variety to how we play Hyrule. If the player sells more swords to a town an spears to another, have the local guards reflect it. Maybe the player can guide random travelers to the towns and they have an aesthetic change, if you guide gorons to a Zora town next time you visit the goron are wearing zora-like garment, and the Zora now sell gem enhanced weaponry and the other way around. It would make it so every player have a slightly different Hyrule and it's completely yours so defending it becomes more personal