Thank you for playing!
I really like your feedback. Your suggestions are on point. Some of them are even in original plan of the game, but we need to cut the scope to finish it on time.
For example: For using warpgates I wanted to make effect where FOV increase rapidly. It looks like classic Sci-fi warp.
For the planets I planned to do exactly what you described - Planet looks was supposed to be based on composition. Planets are procedurally generated in shader, but I had no time to add this in code.
I like your way of thinking about solving problems and I want to thank you for playing once again!