of course a little bit of fighting is going to happen but really what we want is to be proclaimed lord of master of the universe.
doing this through military is the obvious route, but it would add interest to be able to do this through economic, diplomatic and cultural means as well, instead of these just aiding military expansion.
fluff wise the factions are quite polarised so it makes sense that they're at all out war, but that aside i'd like to see more morale issue in play. we have alligence for planets, but ships having some sort of alligence as well may be fun.
i know we as players want our units to do what we tell them, but they should behave as people do, doing what they're told because:
a) they're being paid enough (TEC)

they've been sweet talked (Advent)
c) they have a conditioned social conscious (Vasari)
n.b. added brackets as an after thought as they seemed to fit
as master of the universe i should have a say in these matters, no matter which faction i happen to be playing.
e.g.
if i can sweet talk my minions i may be able to pay them less and/or fight with more conviction.
and of course if i get the balance wrong due to greed i should be diposed, or if i'm getting it really right then why wouldn't members of the other side sware alligence to me.
these are the things i think most people who are looking for 'peacful' (though think of it more as non-phisical aggresion) wins are talking about. really it's all war, it's just the field it's played on is different.
still waters run deep, my friend