Then why are there so many other playable factions? Are they just a con, a last minute after-thought that we aren't actually supposed to play? A Universalis game should cover it all, otherwise it needs to be called something else. For example, there's a little known game called Pax Romana which, according to the blurb on the back of the box, is 'by the creator of the best-selling Europa Universalis series' that was almost purely Roman-centric. Unfortunately I can't recommend it because it was too unstable on my system to play for any length of time (although, in many repects, there seemed to be better game than EUR trapped inside the bad programming).
A game that has the kind of map that I'd love to see in EUR is Spartan. The game is generally regarded as a poor man's Rome Total War because the tactical battles are much less involving but the large map of Greece and the Aegian is gloriously detailed, far superior to RTW and it puts EUR's map to shame. Apart from the lack of a naval tech tree (a bizarre design decision!), I thought that it was a better strategy game than RTW (ignoring the tactical battles aspect).
Yeah i played Spartan. At one side i loved it's massiveness.
But it had a very generic edge in many regards which annoyed me a bit.
Overall i prefer RTW as i found the gameplay more fluid. Spartan should have dropped the tactical battles and improved its strategic level.