Friday the Colorado Parks & Wildlife Commission voted to ban the use of drones for any hunting or scouting in Colorado making Colorado the first state to do so. Many observers believe most states will quickly follow suit.
While the cost of a drone capable of carrying and firing a large caliber hunting cartridge might well be prohibitive the technology already exists to assist in finding wildlife (scouting) via drone mounted optical equipment.
Contrary to the popular anti hunting mythology hunting is most often difficult. Most big game hunting is unsuccessful. Many good hunters walk for days and finish the season not seeing one animal. Aerial drones could cover in minutes an area a person on foot could take days to walk. It's much easier to look down through the trees to see things on the ground than it is to look through what is often thick brush and deadfall.
Drones are already in use for hunting feral pigs in Louisiana. The drone itself carries a thermal imaging camera and locates the hogs in the fields. Night vision equipped hunters then know where to go to shoot the pigs. A huge advantage actually.
We don't yet have pig or other varmint problems in Colorado, and I haven't seen the exact wording from the commission. I'd probably want the door left open for eradication purposes.