I think the pros vs joes angles would lead to many one sided beatings with little appeal for those looking forward to tough matchups. That being said I would be open to seeing top fighters in martial arts outside of the world of mma vs guys cut by the UFC or on the brink. Would be very interested in a bunch of judo olympians, all american wrestlers and pro bjj players take on former ufc fighters or guys on a skid and about to get cut.
I would watch Pokrajec, Kingsbury, Diabate and Soszynski if opposite to them they had four fighters who were olympians in judo, or all american wrestlers, or top ranked bjj players who had just recently started training in mma but not competed. The same goes for Griggs, Rosa, Romero, and Hoger. Also works with Morecraft, Hague, Herman, McCully... Salmon, Brown, McFedries, Drwal... etc etc etc