I like the eagles quite a bit. I'm a fan of all of the bird species in general, and the eagle model is especially cool.
Over the course of playing the series, I've had three eagles in my towns: Celia, Keaton, and Sterling.
I had Keaton twice; once in my original New Leaf town that I restarted and again in the second town I made. He left the second town to make room for a dream villager, but I really like his coloration and personality.
Celia is currently in my all-bird town and has been around for a long time. Unfortunately, in my haste to acquire her, I chose a spot for her house that I'm not very happy with. As such, I'm going to have her move out to make room for Hopper, my final dream villager. I'm currently lacking a penguin in that town, and I already replaced Celia's Normal personality with Gladys. It's a shame that it ended up this way, as I already have an abundance of ostriches and I prefer Celia's design over Gladys'.
Sterling has been a favorite of mine since I first saw him and I made it a point to acquire him. He goes along with Knox perfectly and I like to imagine those two are the guardians of the town.
I like Frank's coloration and Apollo is just sort of a classic villager that I would probably bring into town if you could have more than 10 villagers.
Overall, eagles are a really great species of villager and I look forward to hopefully seeing more of them in the future.