Yeah, its my understanding that when wolves were initially introduced in to yellowstone they saw a drop in Elk numbers but over the years as Elk learned how to deal with wolves that there was once again an upward trend in Elk populations.

I think the natural progression of wolves in to the state is going to happen and would be the best as a slow build up would allow the local deer and elk to naturally respond in a way that wouldnt be a total shock to the system.

In the end I wonder more about where this ultimately leads in the long game as an argument by the side that wants introduction as a way to reduce hunting as they are currently going for an initiative to end cat hunting in the state. I could see them using the natural balance argument to limit hunting and ultimately end it for all species involved.