Actually now that you mention it, I guess meshes, textures, sounds, and even animations might work. As long as the game still has access to all the files with the correct names in the correct folders, even if the files themselves are technically different. Try it out and let us know how it goes!

You mean modding the game on your desktop but not on your deck? I assume that attempting to load a modded save on your deck without the mods actually being present in the game folder would cause errors and might not be able to load at all. I might be wrong, but I doubt the cloud can do anything with ESPs, ESMs, or anything like that.

Did they ever fix radial menus on joysticks? If not, that would be a nice fix to get.