It should not be to hard now that you have done all of the core work (I am still impressed with the camera-rotation feature).
There is actually still a lot left to do. The camera rotation feature, although at first glance is great (made me happy to get it done), actually is not the best in the world. I'm going to be redoing that soon.
Since a user will be starting in one system, and could get discouraged seeing the whole galaxy (he'll want to expand, but conquering the entire galaxy is out of his grasp), can a user start more zoomed in?
We can certainly allow for this later. Right now we need to get the basics down for everything.
Stuff like this will be discussed later on when the core is good and we can turn our attention back to design issues. We still need to design what our basic interface will be like (we've touched on the major factors, but the not the small details like this), and discuss exactly what a new user sees and is able to do.