[Chubfish]

Maybe not a day/night cycle, but seeing certain areas at different times of day would be pretty cool.

For example, you could begin Paramonia at sunrise or something, and as you travel through it the day steadily passes, and you arrive at the Paramonian Temple at dusk.

It would add a little bit more life to the world, I think.

And then you go backwards in the path from the sun setting to it rising.

Sun rise, sun set~