moar random plains!
At least half the maps should have no urban elements.
I agree, if it wasn't a siege or raid you most likely were fighting the battle in the open world (i.e. non-urban areas, generally open areas for armies to march around, but also near forests and natural defensive positions such as hills or rivers for choke points).
You wont' get any sympathy from this crowd. Jacko posted the NA1 battle server's map break down and it was something like 20 "ruins" type maps (which included the open field battles). 20 "urban" maps that are like enclosed walls, or more of an urban dwellings. And 5 castle type maps.
It may have changed slightly recently, but basically there's a lot more urban/man-made structure maps, than ones that are just real world geography. And you still have people bitching (a consensus I might add) that there's too many open field maps.
I think it should be the other way around on battle server (it's not the siege server...) you should be fighting open world battles and have to use terrain and troop movements for successful tactics. But people want to be able to zerg rush and use buildings for cover from cavalry and ranged (instead of the rock/paper/scissors format of troop formations).