Seems like overkill to me. Tracking an animal is part of what makes hunting hunting. Being able to zoom right in on the exact location of the animal you just shot and being able to just walk right up to it seems too easy to me. I wouldn't buy it, and I would try to convince those that I knew not to buy it too.

Keep the sport sporting, if the deer you wound outsmarts you and you lose it, tough luck. Things happen, we've all either wounded a deer or will wound a deer eventually. Some of us recover them, some of us don't, but that's what keeps the sport interesting.