Hmh - I thought a bit about how I could implement this now, but I'm still missing a few key pieces before I could do something like this - it's definitely on my to-do list, though, thanks for the suggestion!
EDIT: The main thing that I'm missing is a good way of automagically rendering the region overlays like the one you put on to show the systems that aren't in the Blood Dragon ZOI; doing that is a lot more difficult than it seems at first glance, unfortunately.