Ah that's unfortunate, was your issue with the generic planets (the ones that act as skins for existing ones like Alkali, Savannah or others) or the unique planets/conditions (Artificial, Windswept, etc)
The unique conditions weren't so bad. I had one with a religious icon and that was alright. I found it a bit annoying to find worlds that looked fine but then had some bastard condition that made them uninhabitable, but that's whatever - it happens. On the flipside I also had half a dozen worlds with crashed terraforming drones, which seemed to beggar belief just a little...
I think my big issue was the 'skins' as you call them. Playing around in vanilla though, I can't help but find that every damn system just has the same barren, barren-bombarded, rocky-unstable balls of uninteresting rock. Your work does make the sector more interesting, but I think the spawn rate on them is just a touch too high? I think I found like three auric worlds with little commonality between them. One had great farming, the other hardly any.
I'd take my complaints with a pinch of salt though... I'm by no means a veteran player and have gotten to the point of even placing down a colony like... TWICE (I never find any habitable or worthwhile worlds close to the core or the UAF, making it feel like a chore to visit the damn things and keep them alive). I may not be the best person to take balancing advice from. It might help if there was a way to adjust if various worlds or modifiers spawn or at what rates, using the LunaLib mod settings tool?