This seems like a good start on a pretty ambitious attempt at building a platform for these sorts of remote viewer/proxy activities. The slimes and their animations are cute.
I imagine that for some streamers, it would be valuable to have the option to have a transparent window (something Godot can do) without GUI buttons visible that could be displayed on top of anything else that being streamed.
I'd be curious to know how the second game was intended to function.
I spotted that you're intending to continue work on this project. Good luck with it!