I never even thought about door location before this discussion.
We have a gasser, so there's not any choice. All of the DP's I've been in were front door models. Some DP models I like, some not so much. Maybe the entryway should be considered as a small factor in how the floor plan works for you as an individual. Either you like a particular layout, or you don't.
As a side door owner (Hey! Another Subforum) I can tell you the things I like about the front door entry:
You do get rid of the stairwell opening pit in the middle of your living room. I'm always on high alert when my little Grandaughter is in the coach. There is a strange gravitational pull for sure!
Just like in your sticks and bricks, your main entry should offer a complimentary view. Most DPs have this WOW factor when you step in from the front and look at the entire coach from one end. With a side entry you see the opposite wall, and can only view half the coach at a time. This is strictly a matter of visual appeal.
It's been brought up that the front door location is to make it look like a Prevost.
What's wrong with that?
Look at new cars today, they use styling cues from iconic cars of yesteryear. I've been an RVer for over 15 years, but a Class A owner for only 3 months. I've always admired the look of the high end DP with the heavy duty bus chassis with front door, big diesel motor and exhaust pipe. I love my gasser with the side entrance, but if and when the time comes for me to take the next step, I'll want it to look like the coach of my dreams.
Now, If only I could find one with a drivers entry door like my Winnebago!
I like sausage wrapped in bacon and then deep fried!