Well, I do remember some people saying that if wormholes get higher tier moon goo, it would be the only place where you can build TI, TII and TIII space.
To be honest, I’m a dirty C1 wormholer and I’m fine with it. But when you leave in Anoikis, every system is -1.0, so it would be good to see a bit better than Ubiquitous moon ore. Maybe it would be good if the quality of the ore scale up with the wormhole class ? Out of the blue, something like that :
C1 and C2 : Ubiquitous and Common
C3 and C5 : Uncommon and Rare
C6 only : Expectional.
This would leave something a bit special to C6 wormhole.