It seems cool enough. I'd honestly love to see some dungeons that are rotating slowly, to be honest, and make some unique timing puzzles. Kinda like the Windmill in OoT, but, like, the WHOLE temple does it. Anyway...
Gravity puzzles have been implemented in many Mario games, Galaxy being the obvious one, but the whole purpose of gravity flipping must be there. Its not just "Hit a switch, oop, there it goes!" I'd like to see some lore behind it, how the people of the temple, village or whatever used it and based their lives around it. Maybe it isn't controllable at first, but then you get an item that controls it. Although I'd hate to have another useless one dungeon only item like the spinner or dominion rod in TP. :wrong: It would have to be implemented creatively, like...I dunno, there would have to be a whole design thing going on, and I'd rather just put ideas down than solidify them. Eh.
But it would be interesting, but they'd have to have a REASON for it, not just "Oh, well...there goes the gravity", y'know?