Call me cynical but I don't think they are adding additional beds in response to requests from existing members. I think they are doing it to expand the pool of potential buyers to include those who cannot afford, or choose not to buy, enough points for anything other than a studio. The price per point has skyrocketed and I suspect they want to be able to show prospective buyers that even with a family of five (or four but the two kids are different gender), there are lots of places to stay for very few points per night. As we know, even with current members who paid much less for their points, the 1BRs are often the last rooms to sell out
As for adding a sleeper chair to the master bedroom, in resorts such as BWV I think the bed would have to open parallel to the sliding doors making it difficult for someone sleeping on that side of the king bed to get out of bed while the sleeper chair was open. It would also block the sliding door, posing a hazard if the only safe way out of the room during an emergency was via the balcony. For similar reasons, I don't think they can remove the dresser, storage bench and chair to put in a dropdown bed. When opened, I think it would make it difficult for both the occupant of that bed and the person on the slider side of the master bed to get out of the room quickly.
What they probably could do, space-wise but maybe not legally, is get rid of the king bed and put two sets of bunk beds in the "master" bedroom and change the sales pitch to say that Mom and Dad sleep on the queen sized sleeper sofa in the living area while the four kids have their own room, complete with bunk beds! That increases the occupancy to six.
HOPING that it will be complete by mid October!
Please please please...pixie dust please 
Bill
