Sure, it'd be nice. But it'd also be more expensive. I'm just pointing out the dev rationale. The intention is not to satisfy everyone. The intention at this point is no longer to have more houses available than players wanting them. There will always be a surplus of players wanting houses. The only point when they will consider adding more housing is when that surplus threatens to approach the number of players already with housing.
Per your example, there are less than 1000 players seeking a house on your server, versus the 7,000+ that already have a house. Simple fact is, most of the players that want a house already have one.
Devs aren't going to do something just because "it would be nice." They're not in the business of just spending money if they don't have to.
