So I was think it might be cool to have asteroid fields generate a gravwell and be connected via phase lanes like a regular asteroid planet... the difference being
1. you can't colonize it? (Some no man's land would be nice)
2. Due to the size and length of the debris field a oblong/ovalist or even fully curved gravity well results. This could be a well smaller than a star's but bigger than a planet's and most importantly its position could really create more interesting situations. It can be positioned so that going one route is significant longer than another due to the shape of this gravwell instead of merely its position.
Also since no one owns it, and due to the debris field, perhaps it has in-system fog of war?
Whatcha think?