I started playing around with changing the scenery for RCDP. If you simply change the picture "grass1" to all white, you get a nice winter scape. (The file is under "data", "scenery", and then "default".) You get a much more realistic snow look if you add some blue into the picture, use a spray paint brush to spread it out. The trees don't match, but those are more complicated to change. The pictures for the trees aren't under that "default" folder. Which isn't a big deal, but it makes it a lot harder to change between scenery.
I plan on making a much more realistic winter scape. To make it easy to switch the trees, I want to change some of the coding so it looks for the trees under a different file so you're not altering so much just to change. I want it so you just have to rename a single folder to switch the scenery. If the pictures are spread out at different locations, you have to do more renaming just to switch the scenery. Ultimately the plan is to create a good winter and fall scene. They're just going to be changes to the coloring. The trees and tractor and windmills and such will all be in the same places. I want to make it so all you have to do to switch is rename the folder with the scenery you want. After I'm done with all of that, I want to contact the creator of RCDP to suggest making an easier way to change scenery and hopefully to add a scenery editor. I think it would be amazing to make the sandbox bigger, customize your own objects, place them where you want them, and have a more interesting FPV flight. Okay, maybe that really isn't worth all the work. But I think a few different flying fields would be great.