I'm anticipating that the opening of Shirogane is going to be a nightmare. I can remember the last time I saw an open house on Sargatanas, and I do check semi-regularly for friends/curiosity. I really wish SE would come up with a better solution for this, but at this point I doubt we will ever see any major changes to the housing system besides occasionally adding more wards or zones.

Although with Omega Savage coming out in a month I think all of the devs attention is going to be on that. I wouldn't expect Shirogane to be opened until after then.