Oh, like a Tibetan temple or something? They could do that more like a summer feel, or they could do a more literal Tibetan thing and make it an ice dungeon, allowing you to perhaps enter the temple but spend time on the grounds. That's a great idea.I like this general notion, and specifically I think that something in a cliff face or a coral reef is a really good idea. I like how they had one in an abandoned mansion in the last game. I have always thought something in a mountain top monk's retreat or something would be kind cool.
Speaking of mansions, I've been saying for a while that I want a more cliched haunted mansion type dungeon, but it would be awesome if the entire grounds were part of the dungeon.
I like this idea too. Metal is something the Zelda games haven't played off much. They did a little in Twilight Princess with the magnetism in the Goron Mines but that was it.What about a Metal dungeon with lots of gears and switches?