Aulani is about 70% sold.
The room layout is different than any other.
DVC claims it was a deliberate decision to keep the sofa beds. The sofas are against an exterior wall, so it's possible that they cannot go into the wall to anchor the pull-downs. Or there's too much bulk to it to be attached to that wall.
They're going to have similar issues with the likes of OKW and VB due to the room layout, more windows in the walls, etc. We've already seen BRV rooms that couldn't get the pull-downs because of the odd ceiling some rooms.