I tend to smash and grab the first 10-15 turns to build some sort of power base. Then consolidate my position and then expand at a slower pace, picking where and when to attack. I do like to build up extremely strong armies but i'll only attack with the bare minimum right tools for the job. I agree it's no fun being totally one sided.
I am also getting a bit annoyed with the senate, they send you to different ends of the known world for little or no reward (wow they held games in my honour, yippee!!! ) I haven't looked into modding the game yet but this ones high on my priority list, no doubt it will be hard coded tho! No Senate would allow for a more drawn out campaign... you wouldn't have to attack the faction you just got trade rights with after twenty turns of trying!!!

Down with the Republic... long live the Emperor!!!

*Ringo*