Very cool idea, and I like the tone chosen. It's pretty difficult to make any stable orbits or systems after adding any new stars. I end up tossing my planets off screen constantly.
Yes, stable orbits are very difficult to create, unfortunately. Maybe it would be better if i had added a kind of “lock” when previewing the planet’s path and the system can predict a good vector. Alas, did not even think of it at the time.