When I see places like Castrum Oriens or other ones with Garlean buildings, I imagine Garlemald as a city near to a present day-like city... something different from other. I would like a to visit a Garlean city one day like Ishgard, Kugane, of the three initial ones. A present day-like city with Garlean buildings, roads... Obviously with the other cities functions like the Retainers, Levequests, Inns, Hunt boards...
Obviously, It will be impossible to do this with Garlemald itself, and if we visit Garlemald in a future, sure It will be just a final dungeon, not a city.
So, this Garlean city would be one builted by Garleans in their style after taking all Ilsabard, but currently free from Garleans by rebel Ilsabardians inspired by the Doman and Ala Mhigan revolutions.