Ok, so one thing I've noticed is that sector layout is really....odd. I've got a game where I have two sectors which literally almost overlap each other. They both are two planet sectors (which is funny because the other planet in their "sector" is outside the range of it. It just seems like they should not overlap that much. Heck, the 7 sectors I have could probably easily be consolidated into 4 sectors. Another thing I've noticed is that when they do overlap, it's hard to select the right planet because they are so close. This is true for systems regardless. I would either change the size of the box which dictates how big the tool tip area is or make it so that systems are that distance +X number of pixels away from each other to make it easier.