Room317,
I don't know the answer why but I think your suggestion is an excellent one. For the dozens and dozens of cabins, there ought to be a couple/few with the queen bed in the back (and the murphy bed up front for a capacity of 4). That would offer some variety in the cabin arrangements (at least more than there is now). I myself think they would be popular. While it would shut out groups with 5-6 people, it would appeal to folks who would appreciate the privacy and extra room.
Have you ever thought of writing a letter to WDW with that suggestion?
Bama Ed
PS - sometimes funny things happen to indicate that Disney checks its fan boards (the DIS) and occasionally acts on what they read. We've talked about obscure, detailed things here and two weeks later, WDW management alters it - it's kinda spooky. So I will add,
"HEY GUYS, how about it? Who wants to make the change and be a hero?".