You nailed the aesthetic you were going for perfectly! It's really easy to just zone out while you're approaching planets and feel like you're in space. Would love to play a version without the mouse only control restriction haha :)
I think a simple WASD + more stuff to interact with while flying would be welcome additions, but it was kinda fun to be restricted to only using the mouse – helped me avoid needless "interact/jump/whatever" verbs that wouldn't have added anything to the game :)