Ok, now that the new nebulas are publicly available [check milliways!], and that a significant block of free time will be coming soon (ROD LOH!), it might be a good time to start this off. Although I couldn't help out in their original creation project much, I feel that at least I can do something here.
Once a week, or if time restrictions apply, once in two weeks, I'll release a background set using the new nebulas that will be free for public use by anyone, or any mod.
I'm currently working on the first one, so pictures and the necessary data will be up soon.
As I intend this to be hopefully a permanent thing, I hope the admins can help to sticky it if possible.
Thanks, and hope these help.