So for the controls, it can be hard to explain. Zooming was much faster than orbiting and orbiting had no momentum, so it felt like driving a tank, if that makes sense. Also I found that goal message on my 2nd play, but I missed it the first time!
I see what you mean with zooming, I wanted to enable people to zoom waaayy out to see the entire galaxy. The momentum is a good one, I could definitely add that to make the movement increase when long pressing. And good to hear you found the message.