That.. is an awful starmap to look at. I wanna say there's a very good reason that Asteroid Belt is Recommended with Outer Rim, and this might be one of the biggest examples for that.
All of the planets under Outer Rim's umbrella are generally considered "outer planets", or at the very least, mid-to-late-game planets, that should all be.. in the outer area of the starmap (i.e. near Aquilo, SSEdge, etc), and Outer Rim without an asteroid belt pulls them in way too close to the inner planets.
There's an argument to be made here, that this configuration simply shouldn't be supported under any conditions, but since the detection and solution is simple enough, I suppose I can implement it.
EDIT: I stand corrected; this configuration appears to be perfectly acceptable without RSCompat enabled. I was over-correcting for something that had been fixed at some point by Outer Rim; just removed that code entirely. Fixed in v1.1.12
I probably won't be accounting for planets that are plopped near the inner planets with big asteroids, since those should naturally be placed near the outer planets. This was more of a one-time issue, I believe