The irony is, if you compare the new maps to the original 1.0 maps based on region, and eliminate the zonelines, the zones are actually pretty much the same size as they were in 1.0, there is just a zone line between sections now. The main zone that has been changed the most (not including the snowbound Coerthas or Mor Dhona missing it's southern half) is the Black Shroud, and that was basically just one long passageway twisted back on itself constantly in 1.0 with the odd clearing for good measure. But by comparing maps it's still pretty much the same size. The zone lines just eliminate that synthetic appearance of 'seamlessness' that actually wasn't.