[Lemmy]

k, after reading the Posts in this thread:
(beware, i'm mostly criticizing all your ideas here, don't take this the wrong way, i would very much like to see a game like this)

Too many cooks tends to spoil things.

Not really, in the game i'm in, there are currently 2 players who don't like each other at all, it's basically one thing they don't agree about, one says option a is good cos it will help us win the game, the other says option b is better, because it is "good" from an RP-perspective, adn we'll win anyway. They haven't resorted to namecalling or something like that, and for each statement they make against each other, they bring good arguments, so actually it makes the game better.

Tactical combat
How exactly do you want to do this? Over IRC or some IM program?
Even then, how long will it take for the secretary to move, say 10 ships? I mean the general has to be aware of the current situation to make the right decisions.
And you can't

Mortality, Game location
That's gonna be one big administration, keeping track of where everyone is in the universe, if they can do certain action or not

- Individual planets: small ones seem popular with RPers and those with little time to be in the spotlight. Manages ships in orbit.

What managing is there to do with ships in orbit?
Retrofit and disband (and maybe tactical combat).
They can't be moved, cos then the governor will lose jurisdiction over the ship.
Same goes for

- System lords: Rules all planets in a system that have no individual ministers. Manages ships making intra-system journeys.

Signups:
...

Whoaa, slow down there, it would be best to sort out jurisdictions and job descriptions first, how many ministers are there? What minister gets to control what? How are ministers chosen? Who plays the game? What exactly do governors do?

oh well, that's all for now, maybe more later.