Yeah, that might be something to discuss with the Asteroid Belt dev, they have their own ideas about what should be an inner or outer planet, and I'm not sure if I should be the one to override those decisions, since they only rely on this mod to enable compatibility with Redrawn Space Connections.
They might be willing to negotiate though, I know others agree about keeping certain planets in the inner solar system, like Maraxsis and Cubium, Adding settings to opt-in to those changes might be the best way for them to handle that sort of thing imo, but it's up to them, of course.
...that being said, while I wouldn't make those sweeping changes within this mod, perhaps as an optional extension mod... anyways, if you want the "perfect" starmap, you might try Better Planets? It completely opens up the location values to the user, so you can move the planets wherever you like. I haven't personally tried it, but it seems to work properly with Asteroid Belt and other mods.