have you made nex config files for the factions and followed his FAQ?
Not yet, nex integration is low priority. It should, in theory, be pretty simple to do.
1) Stop it from crashing - SKIP!
There is no custom sector generation code on my end, this is handled by vanilla. Why everyone need their own custom sector.gen I don't know...
2) Add your faction to the listCopy the Hegemony.json (data/config/exerelinFactionConfig) and change the id. to 'KoC', tweak other values to preference (Use TriTachyon for Mbaye-Gogle)
Add KoC to data/config/exerelinFactionConfig/mod_factions.csv
3) Non-random sector supportSet their homes as the appropriate planets in Arcadia.