I'm not totally sold on the wing rider concept either but I'll reserve judgement until I can ride one. I love the location of this attraction within the park but I like the looks of the layout of X-Flight at SFGAM a little bit better (that diving first drop looks nasty). I'm also a bit surprised that there is no interactive themeing with Wild Eagle since that looked like a fairly integral part of the ride experience with X-Raptor, Swarm, and even a little bit with X-Flight. Maybe Dolly will surprise us with a tunnel or a flaming keyhole or something but the lack of any cool themeing is a little disappointing especially considering how well themed Mystery Mine and some of their other attractions are. Should be a great attraction regardless, and I'm excited to back up there next year.
Eagles live in forests, forests have trees, Dollywood has a lot of trees, a couple of these along the layout might have been really cool visually and added something cool to the overall ride experience.