I think the outdoor kitchens are to slowly move tent campers inside one step at a time! Take that off the list and you are then stuck trying to find a King bed in the rear of a 5th wheel.
I would be more concerned with straight on viewing of a LR TV with theater seating, and a good place to do computer work.
Our little 29' Cardinal, has a Camper King (72x80), computer desk, and two recliners that give straight on TV viewing.
To me the rear entertainment or FLR models are just like MH with the TV mounted above the drive and passenger seats. Compromise compromise!!!
Then you have to decide on open or enclosed bathroom.
Chris