I think the upcoming server shuffle will really help alleviate the housing shortage.
If you're on Balmung, you're not likely to be able to get a house anytime soon. But, you'll soon get a free transfer. You can use that to go live on another Crystal server, such as Malboro, where's a good amount of housing currently available. Then you can use World Visit to do all your adventuring on Balmung.
It's not a perfect solution, but you'd at least be able to buy a house and continue playing with your friends.
And if enough people do this, there'll be less demand for housing on Balmung, making it a bit easier for those who stay there to get a house at some future point.
Also, with the demand for housing spread out more evenly across all servers, we'll be more likely to see more wards added. They don't want to add more wards right now because demand for housing is so much greater on the most heavily populated servers that adding a few new wards wouldn't make enough of an impact there to be worthwhile, and the servers that already have a lot of vacant lots would just get more of them. But, spread enough of that demand out to where the supply is, get the neighborhoods on all servers more evenly filled, and adding new wards more frequently will become much more feasible.