The downside it's loud, gets horrible gas mileage, the flat windshield leads to lots of chips/cracks, the towing capacity of a Rav4, a trailer is an awful substitute for a truck bed. At 100k miles, I love mine.
Do you have that backwards? MGV and washout are a part of the BD package (or at least use to be).
And if you think you want larger tires in your future, the BD gives you gearing for that, that the BB auto is lacking.
I can just see it now, thousands of the G-wagon crowd holding out till Ford introduced oiled canvas seats to the Bronco, where do I sign up for the pre-order? It's going to be a long line.