Obviously, I understand that this mod is very early in development, so I'm sure you have lots planned which just aren't ready yet. But I'm excited for the concept so I've gone around in editor mode and just tried to track down a bunch of things which probably need changing/balancing in an effort to help make this overhaul a reality.
Circuit Recycling yields vanilla space-age products. This means that recycling processing units effectively obliterate rare metals, advanced circuit recycling deletes electronic components, and regular circuits don't give back wood.
Steel before Vulcanus requires coke, which needs wood and coal, which means lots of important things are hard to get on space platforms/gleba. Since coal isn't always available.
Anything requiring blue circuits implicitly requires rare metals, rare metals are nauvis exclusive which means vulcanus and gleba cannot produce blue circuits. I like the idea of importing resources but this does make softlocking yourself a lot easier.
Repeatable techs, particularly weapon damage techs, give a much smaller damage boost to cannon shells and bullets than they would normally, since they makes the damage scaling pretty unforgiving, this will make space platforms much harder to build, since the higher tier ammo isn't craftable in space anyway.
Atmospheric condensers can create liquid water on space platforms, wind turbines also work in space, so do gas power stations which can also use thruster fuel and oxidizer to work.
Matter conversion allows you to smuggle all sorts of stuff where it doesn't belong.
There are two ammonia, there are also two lithium.
Many buildings don't support quality modules right now.
The tank can be placed on space platforms, but they do not support remote driving.
K2's roboports can be placed on space platforms, the strongboxes can too, allowing you to use bots on space platforms, also storage cheesing.
Superior inserters are a direct upgrade to Stack inserters, but use less power and are arguably easier to acquire.
Winning the game via intergalactic transceiver causes a crash. Also IMO, IG transceiver should only be placeable on a space platform and require being at the solar system edge. Or have some other interesting condition.
(IMO, I think it would be cool for late-game Krastorio products to be crafted on different planets or space platforms and require materials from multiple locations. What if rare metals were very rare on nauvis, and mined by space platforms? This would also help with the blue circuits being hard to craft outside nauvis? Ideally, I'd imagine late Game SAK2 would involve lots of interplanetary shipping and factory platforms, much like how Aquilo plays in vanilla, which would be very cool.)
