You should be
forced to
eat your own dog food. Force every single player in 1:1 to play anonymously with a real planet, even get them to join a bunch of different alliances (though one max per alliance to try and not favour a single alliance).
At the end of the round have it so that all such planets co-ords are announced as to prevent any bad behavior and favouritism.
I'd be curious to see just how well some of these planets perform. Are they going to get exiled multiple times from high ranking galaxies if they're not around that much? Will someone covert op them so badly they might finally get pissed off with it themselves? Can they get a scan from someone else if they decide not to join an alliance?