In Endless Legend, region size is something you can select in the map setup (tiny through huge). So you can create a variety of scenarios (e.g. smaller maps with huge regions generally leads to earlier conflict, due to scarcity and nearness). When playing big maps, selecting huge regions was a must. More regions = more units and pathfinding performance is terrible (still) in Endless Legend, even on a fast machine. EDIT: I just checked, and region size is somewhat limited by map size (no huge map with tiny regions, or vice versa). Regardless, I'd expect there to be some variety presented in map setup for HK, given the developer's prior approach.