Our first TT, a 20 footer, was a rear dinette and had a large picture window. It was really nice to get a great view and it also let a lot of light in as well. With the layout it had, it was a tight squeeze to slide past the kitchen counter to get onto the seating on one side tho.
Too many RVs have small windows that are too low down and you have to bend over to see out. The dark interiors they all use doesn't help either. With our current TT, we opted for a rear kitchen over something with a rear picture window because of it's large counter space but I REALLY miss the picture window.