It is time to add more wards to housing. Without even adding an entire new housing district, if they just doubled the amount of wards in game, it would make a huge difference. I understand that testing, and time is needed to add such a large amount. I can deal with that. A new district would be a welcome additional space addition, but they could develop that later, and just focus on making more space with what they already have.
They should make it a priority to add new waves of housing space each patch if they are going to keep relying on this aging system. I'm not saying no to instanced housing, this is not an argument for instanced housing, so please keep that out of this thread. This is a suggestion to improve the systems we already have. They should be adding wards every single major patch cycle, and the fact that it has been so long since they have done that is sloppy, and a bit of an insult to the player base that has been complaining about housing for so long.
I understand that they are upgrading the graphics, and probably really short on managing space as it is with the upcoming expansion, but it would be really cool if Dawntrail added more housing space with every patch, or perhaps during the off season between expansions as a kind gesture to get the player base ready. There's no excuse other than the space on the data centers being the limiting factor. They should still be working on it, and getting it done though. This is arguably one of the most complained about things in the fandom.