Housing in WoW might add a new layer to the game that is much needed.
I am personally neutral when it comes to the prospect of player housing but I feel like it might add an additional layer to the game that is much needed in the form of an alternative gameplay loop to the usual formula. Right now you basically kill stuff get rewards, done. There really isn't much else to the game. Either raid/pvp or run solo content but in the end the results are the same. Maybe this will help add a little something extra to make logging in that much more engaging.
So far they have not stated that there is a gameplay loop attached to the housing. Probably won't be. RP guilds and coalitions might spend time there. I expect everyone else to only occasionally visit their house, or at best to AFK in their house in between queues like I do in FF14, but in FF14 you can literally sit anyone and queue for any content and get teleported to the content. Whereas in WoW the only endgame content you can sit anywhere and queue for is rated PvP, otherwise you have to fly to a mythic dungeon or a raid if you want to do it, and WoW also has world quests.