adding ethnicities

[the_hdk]

so far I only found this thread

but how can I add ethnicities?

and if I want to add for example Persikos to Koinon Hellenon
do I need to change the anti-traits for all Koinon Hellenon ethnic traits?

[burn_again]

You can change ethnicitiy-traits via console commands as I described in this thread:
https://forums.totalwar.org/vb/showthread.php?t=110577

I don't know however if that could screw up your game.