Yes, I know they will add more sooner or later.
However part of me is worried. It seems it's very difficult for SE to add more plots. There are 1000s of players per server. Can they realistically provide 1000s of housing plots with the current system? Or will there always be people who can't have a house?
If they can't provide housing to everyone, maybe they should go back the an instanced housing system like in FFXI - but instead of just a room, give us an instanced plot. With luck we can do away with the zoning when entering the house and have a much higher item limit. Instanced house/plot is better than no house at all.
Convert the existing wards into "player controlled" town areas, where players can rent (via gil) a plot for their stores, FC guild halls, and what not - of course you have make the aforementioned stores and FC halls useful. Rent prices will be determined by auction so allocation of space will be via supply and demand.
PS:
About houses, I rather have pre-partitioned houses where each room has it's own "central light" than the current unpartitioned rooms with an immovable central light. It makes properly lighting your place nigh impossible - walls too close to the central light are blindingly bright, areas blocked off from the central light are near pitch black ... etc.