Whaddya think? Tides in the next ES game. There could be secret caverns that are so big that unless you have like a million water breathing potions, you have to wait till low tide to explore them!
Unless you are an Argonian.
I think you should use the sugestions thread. Tides would work if a mad wizard blew 2 up.
Or maybe some kind of old turtle lord with an overpowered kamehameha,