I saw the next cruise you booked was on a Fantasy class ship, the Paradise. After a 6D comes cat. 11 and 12 suites, those are the only balconies on the ship. So while it is a great upgrade it is only 2 catagories up on that particular ship.
I don't have a problem if they phase out rollaways, there are plenty of triple and quad dedicated cabins (with either sleeper sofas or pull down bunks) to accomodate those who need the larger cabin. My one experience with a rollaway was most definately a fire hazard if something were to happen at night.
I believe they never allowed rollaways to even be put on the Spirit class ships and I guess they are just phasing them off the rest now.