What conventions would you like to see changed in Zelda U?

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More than conventions, back to its roots. Ocarina of Time dungeons like the Forest Temple and Water Temple let you explore looking for various keys at the same time (you actually need 3 to proceed). Linear Zelda temples now give a key that you need in the door next to the treasure chest :/

Also, difficult boss battles and a lot of enemies surrounding out and inside the dungeon, something that really feels like a challenge and you actually needs potions and fairies to survive. Also, more boss battles like Ghirahim: no use of the dungeon item to defeat the boss.

I want also new kind of puzzles, Skyward Sword was like a good step in the right direction.