Posting this in behalf of a friend.
Before I start, let me state the fact that housing doesn't really give much advantage for either story or gearing, or not any more than extra retainers already do, it's pretty much vanity content, the only part of housing that could be considered advantageous is gardening, which will be added to the apartments added in 3.3 and that everyone will have access to.
The main problem with adding new wards is the high amount of server resources they use, and upgrading servers is not cheap by any means, so I was thinking, why not add premium wards? Something like a monthly rent of $5 for small $10 for medium $20 for large, new premium wards would be added automatically as the old ones fill, that way there's never a shortage, and the money would be used back for server resources for more premium wards so it would be a self-sustaining system.
What about those who don't wish to pay? They're still adding new regular wards periodically, with Ishgard housing also coming out with many wards, basically this would be a service for those who do not wish to wait or do not wish to deal with the current housing shortage at all.
Again this isn't any more game breaking than optional items or extra retainers that people in this forum already support, you still have access to regular housing and those who want to offer extra support to SE can do so while getting the benefit of not dealing with the current housing mess.