Wow, that's just... wow.an idea with your own objects is not a bad idea, but with FBX it would not be bad to add Skin or your own animation, as for the sandbox itself, that is, some instabilities such as sound chewing or it does not work at all or buggy triggers and stopwatches, but in general it seems to work. I also wanted more tools for editing the weather))
Can you share the map?