Our Keystone Outback 298RE has the rear living with opposing slide out.
What do we NOT like about this arrangement.... NOTHING!
It's absolutely wonderful. Ours has windows on all 3 sides of the slides, so we have almost a 360 degree view from the living room area. We also removed the kitchen table and chairs and the two rocking chairs that came with the camper and replaced it with a household three seater recliner sofa. I put wheels on it so it can be turned facing the back window. We absolutely love this arrangement.
Ours has an outside propane stove and a small sink with outside water. It's in a drop down hatch. It does not have a refrigerator, but is ideal for fixing stuff outside. We almost always carry an electric cooler with us for drinks so the refrigerator inside the camper is for food items. We often set the electric cooler outside, but it's just as easy to put it in the car or truck, plug into the cigarette lighter, and presto! Instant refrigeration anywhere .... even when not camping.
I do not know of any camper that would have the full outside kitchen with counter tops, cabinets, and refrigerators AND a rear living arrangement. Usually, those outside kitchens take up a good size foot print inside the camper and at best, will have a single bunk on the top of that "box" with bunks on the opposite side (usually a slide out).
We use the outside stove and sink all the time. We just place a picnic table within reach and usually use an electric griddle also for just about everything.
We love ours. There are absolutely NO negatives for us. It's a great camper!
