I remember that when Winnebago brought out the Destination and the Itasca Latitude on the Workhorse UFO chassis, it was mid-entry and rear engine (gas or diesel).
I liked the mid-entry that we had with the Brave with the driver's door. I particularly liked the "computer" stand that was in the passenger side dashboard. I miss that on our Journey. A filler for the stairwell on the mid-entry would be nice. I know that you can make one yourself, but a "factory" supplied one would be a nice option.
With the driver's door, I didn't track dirt and oil onto the carpet at gas stations. However, it is more difficult to climb into it, and for some, it may not be very useful.
I guess that you take what you can get.
W8RLM - Bob