ahhh "Galactic Senate."
I remember that. I used to play that, and then try to destroy "Coruscant." Then they started adding Unstoppable Virago/Slave 1s and the Death Star. Then when that did nothing, someone just added triggers to just kill players altogether.
I think he's right. With this engine, I don't think there will be a map to have your "Senate" like you're thinking.
For all we know, 2 players start the battle and fight for possession of the one planet on screen.