just been looking at the building sizes on the wiki for the Amuni and they dont really change much, residences stay at 4x4, workshops go from 3x7 to 4x6. and the portal buildings are similar per square, you dont need portal roads anymore so that gets rid of the canals from elementals. seems you might be gaining some space by getting rid of the elemental buildings. (im sure someone will correct me if im wrong about that ) but if inno are supposed to release 2 guest races a year (i think i read somewhere) surely it would get pretty boring just flipping buildings around on the same size map, they have to increase the map size to make it more interesting so they should be increasing free expansions from scoutable provinces. not many will fork out hundreds of $ for premium expansions surely.