Anecdotally, I fished the Lamar valley in 1995. The first year the wolves were released. Never saw them, but the place was overrun with coyote and elk, the Lamar itself is a volatile system so the river was very wide and the pools fairly scarce. I also fished it twice in the last 4 years, there are more buffalo, fewer elk and the river where I fished it (Between Soda Butte and Cache) has changed dramatically. Its still wide, but there are noticeably more pools, though less bigger pools. There are also lots more trees on the valley floor, though most are still in the sapling size. I still have not seen a wolf, but I seemed to get caught in traffic jams more often where folks with cameras with long lenses are running around.
I think reintroducing the wolves was a good idea, and is proving to be a success. As to the diminished Osprey because of the drop in cutthroat, that may be the case in the Hayden Valley because of Yellowstone Lake, but in the Lamar I'm still them (there were a couple nests in the canyon visible from the road, saw chicks in one of them with binoculars). Also saw a golden and bald eagles this past trip, the golden we saw kill a rabbit along the hill where Soda Butte comes into the Lamar.
Bear numbers being up makes sense, I've seen grizzly the last three trips and when we hiked into Pebble their tracks were everywhere.