So.... don't pick the Eugenics tradition as the Dominion? And if that's the only one in the tradition tree that is useless, well, that's life. Base game has traditions that have benefits I consider useless for various playthroughs that I have to select to get ones that I do consider useful, it's how it goes.

its more for subjugation the other races and modifying them than anything else. cant have your slave races have bad traits you know.