I kinda think that the term 'extreme' is being misinterpreted, some. There really aren't that many places in the continental US to be doing any 'extreme' off-road rv'ing. Alaska likely has a bit more space for that. In northern BC, where I live and spend a lot of my time in rv, there is not a lot of 'extreme off road stuff'.
In fact, I can only think of a couple times last year where I was in that environment. I do, however, use the 4 wheel capabilities frequently to get in and out of places safely.
None of that really matters tho, as far as the OP's suggestion. I think it has merit, although ultimately, I'd be surprised if it flew.
Gary Haupt