I'm an ex level designer and I'm just getting into liftoff being that I recently built my first FPV quad. There is a feature that you are missing that I think will allow you to take this game from neiche to mainstream game playable by millions. Its custom map importation. Even if it is as janky as giving the community the docs or tools to manipulate save files for maps outside of the ingame editor you'll be surprised by the skill people have. (also adding textures even if from a preset list would be nice). This would allow people like me to model spaces that I want to fly in real life with much more accuracy then just the blue tile workshop space. I walk around locations when I'm traveling my area and see perfect places to fly but I'm to scared to send my drone up without some practice.

Also this would also allow for the modeling of Iconic scenes from movies (saw some posts about starwars i'm sure that would be a hit) and other places that would bring a whole new community of not just fpv fliers to this game. Its something huge to consider in my opinion for this gaming if there are plans of growth. I see a huge future in games like this. I havent played a "game" like this that has caught my and my friends attention in this way in a long time.