First of all, thanks a lot for your feedback!
It was very informative and confirmed some my suggestions (e.g. about needing to add more maneuverability).
Also I realized my such a bad mistake: I didn't make it clear that THERE ARE 6 PLANETS! You can scroll planet selection menu! It is definitely my fault.
Thanks again, I hope you'll like 3 more planets if you'll decide to play them too.