This looks super fun. But please, keyboard+mouse support would be essential. If you have trouble coding for multiple kinds of inputs, I recommend Sinput: https://sophieh.itch.io/sinput (But even without that, if you just used the unity input system I'm pretty sure it's possible to make it usable with both keyboard+mouse and a controller, just need to set it up correctly in the input settings. Sorry, I don't mean to sound patronizing!)