Do you mean 3x3 size of the house floor? It seems to me that such unification will historically seem unfair. Why don't the developers, knowing that different nations had different house layouts, make the houses in the game more diverse, keeping the dimensions only within the nation? This more honest approach, it seems to me, will be more conducive to immersing the player in the atmosphere of antiquity. A two-story Greek house with an area of 1/6 or 1/4 of the area of the city center would look more harmonious. In this case, it is not necessary to remove the old 3x3 model, but simply add a new type of houses by analogy with two-story Carthage houses. After all, as far as I know, the classical period for Greece during the time of Pericles was the most luxurious.