You will have maps that serve the game mechanics.
IMHO, giving map makers 100% freedom and creativity should not be a priority. There are obviously 100 other different features and mechanics in the game that the map makers need to take into account. Iberian walls are no different in this regard. And as I said, the maps are crammed and weird for all players, not just Iberians, so the maps just need better design overall. All just my opinion. Why are metal and stone mines right next to the civ center on almost every map? Shouldn't the player need to scout for these precious deposits of minerals? That's what I'm saying -- rethink all the maps to take into account the game's features and mechanics. So far it doesn't look like this has been done. Not for the Iberians. Not for much else.