I don't know what it is, but I always seem to end up playing the same maps. And those maps mostly consist of grassy hills with some ruins in it, we have like 8 of those. I find it strange how I encounter so little variation while I play. I can not even recall when I last played some of the maps I see listed in the rotation. How does the system work? Does it just go down a list? Or does it shuffle?
Also, Agania is in the EU_4 rotation, I always enjoyed that as a battle map and it would be fine on EU_1. A good balance between cover and open space without much chokepoints which keeps the fight flowing. The list is also outdated by the way.