Now that the mod is newly established, in a better system, have you considered the old comments about different sizes and shapes of passages? The current model is bulky with 4 slots, which is fantastic, don't get me wrong, but...

I feel there would be a lot of worthwhile options to expand on the concept:
-a hexagonal dome with 2-4 passages, a door and a pipe connector for more cramped designs
-a long "mall" style strip with space for triangle buildings on the sides, adding a bit of a "promenade" to larger colony blocks, I'd assume that would still function as with the old SM's Hub mod
-perhaps other utilities, decorative or otherwise, i don't know.

Either way it's a must have mod to me, back then and now, and I'm glad to have it in any state it might be in!