I wouldn't mind Andrea evolving to be more badass - the female characters so far are a bit lacking in that regards, annoyingly - but I definitely want to see a natural evolution. She can't just be a badass sniper right away. I want to see her get from Point A to Point B.
If it takes this entire season, that seems like the right pacing for a show with strong ratings that could go on for many seasons. Character development needs to be paced to match the likely duration of the story. I'm thinking we can get five or six strong seasons.