Isn't it safe to assume more wards have to be added?

[Dustytome]

Fortunately, just giving players options for apartment size has the potential to shift a lot of the demand away from wards and that should be a relatively simple thing for SE to do since the interior of a house is already instanced.

I feel like there was a translated interview where they already said that wouldn't be possible. I can't seem to find it again though.

addendum: And then just like that I find it.

- They can't change the layout or size of house interiors, plots or housing areas due to design (people kept asking for changes to those); it'd cause bugs (my speculation: it's how furniture coordinates are saved)

Translated from this by Luna on the ffxiv reddit discord.

Not sure if that applies to apartments as well.