I think what a "preserve and protect" approach has going for it is the history of how benign they are....for centuries they have been moving about quite freely, it appears, with a minimum of disruption to our lives, it seems. They do not prey on livestock to any great extent we know of, do no noticeable degree of property damage and subsist largely on a game animal, the population of which even they and us combined can't seem to put a (much needed) dent in. Seems like all that would be required is to officially acknowledge they are there and try to map their ranges as best we can. Preserving their habitat (if we can agree on what it is) would be an obligation that would reap unintended benefits as well for lots of other species. If they are human, and given that we have not much of a chance of containing them in BF "Reservations", that option seems dead on delivery. If they are primates or some "other", ditto. Really, our ability to change, manage or steer this outcome will be very limited indeed.