That sounds pretty nifty, actually.
However the one flaw I see is that SE4 has military action being too powerful.
What if you were to set up a scenario:
To start with, there will be a large number of player races as SW "races". Neutrals perhaps, or just with colonization next to impossible.
Then on top of that, you would have the two "organizations";
The Empire
- Starts with subjugation treaties against all of the races.
- Has a trade aptitude of zero, so they can only make resources with protectorate or subjugation, and not the positive treaties.
- Starts with a large, spread out military force.
- Starts with a big planet (Coruscant) which has very low resource value, but lots of Build Rate, and lots of Resource Storage.
- Little to no stealth detection and no mine tech.
The Rebels
- Start with very little military.
- Starts with a cloaked planet (Hoth, say) Note: this gives them political contact, and a construction base to launch from.
- Starts with decent stealth tech, so they can move around and attack at will.
Victory Conditions (roleplayed):
Empire -
Defeat the rebels. This could involve finding the rebel base and destroying it, probably with a sunbuster. In order to maintain their military forces, the empire will need to resubjugate any rebelling races with a show of force.
Rebels -
Defeat the empire. This would involve an economic victory, by getting the individual races to break their subjugation treaties and thus starving the empire of resources. This involves driving the empire out of the generic races's systems so that they can support your cause.
Generic Races -
Survive the fall of the empire. This means accepting the subjugation while the empire remains in power, and rebelling when possible. If the empire returns in force, a quick subjugation treaty to save your hide is in order.
Note: If the rebels win, the generic races who survive win also.
If the empire wins, the generic races who survive do not win, but do not lose either. They simply have to wait for another rebellion to start up in a sequel PBW game