Jesus. What impatience! Do you think the features launch with everything already available? Have you ever even played a housing system on an mmo? That is very silly to say. Having housing doesn't mean you are gonna have a housing ward on every zone in the game. Blizzard chooses where they want it and they give a number of customization that fit with that theme. That's it. In time the features gets expanded to new decorations and new wards.
If SWTOR, FFXIV and ESO can do it and people love it, it is beyond me why WoW players are so stubborn about it except ignorance of how the system works. Housing gives activity to the whole game. Reputations, classic dungeons/raids/pvp and current iterations. It adds more rewards and more objectives while in now way forcing anyone to do it.
It would massively drive engagement and it's evergreen content.