Not to be a shameless self-promoter, but I wrote this piece quite some time ago about the Vision Concept.
http://expeditionportal.com/jumping-the-shark-land-rovers-discovery-vision-concept/
Not to put too fine a point on it, my takeaway is thus: Overlanders obviously love the Land Rover brand. Land Rover clearly doesn't give a rip about overlanders, and why should they? Their market is clearly desirous of these more refined road machines and they sell them faster than they can build them.
I have to wonder if the horse and boat trailer crowd won't be steered towards the RRS, and the LR4 successors will become even less off-road oriented.