Why not put housing plots on mog station?

[Felis]

I would love for them to put houses on the Mog Station. I really want a house but it is impossible to find a open small plot to purchase. I would buy one from the Mog Station day 1 if it was a option.

That would fix nothing.
Don't forget, the poblem is not people selling houses to other people, but people paying other people for demolishing their house.
With plots in the mog shop people will still pay other people with gil to get a free plot they can then buy in the mog shop.

This, this this.

Even with 512 person mansions, they'll still be limited. What happens when they fill? The problem starts all over again.

Private instances that aren't loaded the entire time are the solution, just like your Inn room. So replace the Inn room with a private instanced room. Preferably one that doesn't blackmail you into resubbing for every 45 days, too.

512 * 16 (normal and extended wards) * 4 (the 4 cities) = 32768 rooms if they only put 1 aprtment in each ward