I was thinking that now that there is a way to get races into the federation thanks to very low environment scores, I was thinking that maybe there should also be systems in place for that with the other planet traits. What came to mind for me was the Acutians and the Burlusts for economy and public order respectively. If either score was particularly low on a non-federation planet, while the other race was a federation race with a reasonably high version of that score, the player could convince them to use their natural talent in that field to bring that race into the federation.
On the other hand, if both races are not in the federation, then this might result in the creation of the "Economic Consortium" or the "Blood Protectorate". They can only be dissolved if there is only one race left in them, if the Acutians or Burlusts are eliminated, respectively, or the Acutians or Burlusts are convinced to join an existing federation.