I doubt they'll stop adding more plots of land moving forward - the question is just the rate.

The reality is that the stress of the housing situation is different per server. On Adamantoise, it was only maybe two-three weeks ago that all Goblet Subdivision 5 plots were bought out - slow enough activity that 95% of the small plots are actually all owned by members of our Free Company (as well as all occupied larger houses). But that's on our server - I know particularly popular ones like Balmung and Excalibur have housing disappear within a day when it's added.

What they need is to start allocating the expansions of housing areas based on server demand rather than globally. Looking at it globally, when you consider that the vast variance in populations, there's probably a good chunk of servers which aren't having problems - so it's not as urgent as it was.