I would love to see a revamped version of "Horse head" from Parapa palace in Zelda II. Instead of his being a simple laughable fight, he will work in a much different way. The battle takes place in some strange either spooky shadow temple, or in the end palace gauntlet. The room darkens, and you see Link's breath. the room is dark, and ominous, and cold. you hear hooves, and see glowing red eyes. Horse head lets out a loud howl/neigh something intimidating. Then steps out of the darkness. Braziers light up, and it's on.
The boss has a few phases. The first he runs charging at you. he's so huge, and heavy however the ground shakes. you have to use the hookshot (in time) to pull yourself to the other side of the room. he either hits the wall, and is stunned or swings the mace as he charges. point is, you run to him, and slash him from behind a few times. Then he goes into phase 2. His armor kinda cracks and falls off, and it would be a fight where you have to deflect his blows from all angles at the right time with wii motion plus, and try to hit em a few times. then he dies. just my idea.