Looking at this floor plan that just about every big manufacturer has some version of. The rear is the same as always - island kitchen, a couple chairs and couch across from a TV and maybe a fireplac...
I'm not really seeing the wasted space some talk of. The living area is the same as most of the 5ers in that size. Yes you have two sinks. But take into account that some 5ers have a 4-5' shower as opposed to the 33-36' diagonal that the one in work2muchs post. Add 2' for a longer shower and you still have the same basic amount of used space. That floor plan would work for anyone full timing IMO.