So I tried searching around the website, the swgemu website, and google for a weather mod. Basically just so all the planets are always at their sunniest. How hard would it to make this? Or is there one already I might've missed?
What do you mean exactly? Always the sunniest? Even at night?
If you mean sandstorms/rains, etc, go to: datatables/environment and pick the planet you want to modify and then delete everything in the "Attached Camera Appearance Template" column.
Do this with TreExplorer, of course.
I'd do it, but busy atm and it's easy enough to do yourself.
When you're done, make a folder in your SWG folder called datatables and then inside that a folder called environment, put the modified planet .iff in there and you're done.