possible solutions

[Final-Fantasy]

Auctions
because I rather be guaranteed a house at a ridiculous price than stay up for 24 hours to not get one.

Lottery system
same housing system as the one that's currently in place, except when you find an open plot, you purchase a ticket for a drawing where the winner has exclusive rights to buying the plot for the next 24hrs and if it's not purchased within that time limit, the lottery restarts, and the previous winner cant buy another ticket for the same lot until the next time it goes up for sale.

Premium Housing Wards
pay some extra on your monthly sub for a house.

separate districts for FC USE ONLY meaning you can only purchase a house there if your the leader of an FC and the size of the house you can buy is determined by the average amount of active FC members.(active meaning they just log in once every 2 months) this would be to prevent a dieing FC with 1 member left from keeping a plot to himself, when an alive FC would love to have it.

instanced housing(on a plot of land in the environment of your choosing)

make people who are transferring to another plot go through the same process as people who are not transferring.(you camp a spot for 16 hours and someone walks up and takes it in a few seconds, are you kidding me?)

***not a solution but I thought this might be interesting***

create a legendary housing district for people who accomplish extremely difficult tasks in the game like top 10 pvp players in the server or those who clear the most difficult raids while having all jobs at max level whilst being the first to do so on their server, or art contest winners. things like that.

The only option which is a solution, is Instanced housing, 14 million players, not even 1% could possibly ever get a plot with so few wards/plots.

[Penthea]

The only option which is a solution, is Instanced housing, 14 million players, not even 1% could possibly ever get a plot with so few wards/plots.

There's a big difference between the amount of accounts created and accounts that are actively played. This game doesn't have 14 million active accounts.

But your point still stands that with the current system there will never be enough plots. It's an unsustainable system.