Trees are more familiar to a lot of people, that’s true. Myself included. They’re still huge trees though, some of the largest on earth. I’ve been there in person and it doesn’t diminish the movie for me. If you’re doing all the planets as single biomes eventually you would end up covering a temperate forest world, not to mention they already had Tatooine in the same movie, so there’s a contrast there. You could do a jungle maybe, but that would also feel similar to Dagobah in the same movie.

There wouldn’t be fan films in the first place without films to be fans of!