For a whole bunch of reasons, it'd be nice to be able to disable the visual effects of day/night and weather. Not the ACTUAL effects they have on fishing, unspoiled nodes, etc., just the visual appearances.

I suggest it because:

A) The ability to turn off weather effects was in FFXI so there's a precedent for having it.

B) If you're recording promotional videos of any kind about FFXIV, from machinima to how-to guides, it would help greatly to be able to always have the same lighting at all times.

C) People with computers that are just barely able to run FFXIV would no doubt be very happy to be able to turn these off to save processing power (hey, some people love the game but don't have a lot of money to spend on new PCs :\ )

In my wildest dreams, I'd love to be able to set what hour of the day the game should display at that time as well as which weather effect, but that's probably asking FAR too much.