I think all floor plans are build to be loved, so unless you have special needs, or don't plan to drive the coach a lot - that would not be crucial in my decision.
Commonly safety of coaches is downplayed on this forum, but I went long way to buy bus conversion that would protect my family in case of accident, not just collapse like cardboard box.
Than drivetrain... lot of members say that you should not worry about fuel cost after spending huge amount for coach purchase.
But I am one of those guys who calculate every fill up and I know what is available on market. Non-rv sample, after years of driving diesels I bought gasoline wagon as diesel wagons are not allowed in USA. Bought the wagon for dynamic seats with massage build-in and air suspension. It is lovely wagon, AWD as well but with the engine that makes 20 mpg on Premium.
Than lately I bought the same model diesel sedan. Sedan makes 35 mpg on cheaper diesel. No dynamic seats, no massage, coil suspension, but guess what car become garage queen?