Xilizhra wrote...
I would prefer to replace it with something where no one was strictly dominant.
Sadly, that's not possible.
Then Cerberus is one of the most idiotic organizations in existence. The rachni were a spacefaring race that waged war against the Citadel for many years, and Cerberus thought they were just animals? What?
So far, the only members of the Rachni race who seem to be capable of communicating are the Queens. The Rachni are intelligent but, at that point, all evidence pointed towards them being hostile 100% of the time and little more than animals if they were not in contact with the Queens. Bringing them back was irresponsible in the first place, at least Cerberus tried to stop what could be a danger to the galaxy and use it to benefit humanity.
Granted, it was a mistake. It happens.