-READ ALL THE WAY THROUGH BEFORE COMMENTING-
One of the biggest things about using SoaSE to make SotP for me has always been that battles in the Halo universe, as with most other sci fi universes, take place on a larger scale than SoaSE can provide. You're rarely fighting over more than a few solar systems and often just the planets of a single system. Anything larger than that and the game crashes.
Perhaps there is a way around this within the system of the game.
Perhaps if we swap out some meshes here and there something else can take place. The thought occurred to me, there is nothing stopping us from turning stars into supermassive black holes. There is nothing stopping us from changing out the planet mesh with something else, like a little star, or a small solar system. Maybe changing resource asteroids into tiny planets that orbit these tiny stars.
I'm sure there would be some wonkyness to this idea, and I'm posting it here to have the issues pointed out and possibly find a solution for them, or finally wipe this idea out as too silly.
If you're really unfamiliar with what goes on behind the curtains of SoaSE, please do no more than read, this is really a discussion for modders and players who understand the game's mechanics.