We have a Winnebago 42AD, which is a forward kitchen model. It doesn't have a bath and a half. It's also true that the front seats are not part of the living room. The living room has an L-shaped couch and a loveseat so we don't really have any problem with seating space in the living room. The kitchen is large and we have a bedroom with a king-sized bed.
We did have a front axle weight problem. When we first took ownership, the front wheels had more weight on them than the drive axle. We adjusted the ride height of the tag axle. This resulted in less weight on the front and more on the drive. It took four trips to the scales while the dealer was adjusting. When all was done, the front wheels were still a couple of hundred pounds overweight. Freightliner advised that the weakest link on the front axle were the tires. Going up a tire size would increase the capacity. When it became time to replace the tires, I put 295s on the front instead of the 275s it came with. We're now in spec. One of the benefits of a heavy front axle is that it makes the ride and handling much better. Look at the more recent model years Winnebago. They have bigger front tires that the ones in the rear.
We have looked at dozens of other floor plans and we haven't found one we like better. We're very happy with OUR selection.