I would like to see a way to increase food output of a planet at or below 10. There are some suns that can't be populated, because no planets are above 10. Possibly a building that could increase food productive to 15 or a colony ship upgrade that could increase food production.
Uninhabitable stars must stay the way they are. Because in our visible universe there are very few habitable so its too god even the way it is, plus uninhabitable stars are great spots for wormhole warfare.
There are was to make a planet live able its called terranform
i know i misspelled it
Rim Worlds said,
If there is a planet uncolonised. And the star ignored and unprotected. Then few fighters can wipe native fleets if there are any, one colony ship can spawn a colony. Rush shipyard lvl2, rush wh 100k, deploy 20h, and if you have untuned wh with heavy artilery siting there. Then your troyan gate can be opened.... just tune it for 0h and here you go, deploy and destroy from within
I like ur idea. Thats why I always at least cover stars like that with a few fighters so ill at least get a sitrep.