There are a lot of concerns. First off, having Fettes, Mahan, and Heady all in the lineup is really painful. Fettes and Heady both hit under .215. Mahan was the third worst hitter on the team at .232. I would like to think they improve, but I can't really hold my breath about it too much, and having 30 percent of your roster hitting that poorly is very rough. To be fair, Fettes did better, hitting .236 in the SEC. Heady hit an abysmal .174 in the SEC and Mahan hit .226.
I just haven't been overly impressed with either Heady or Mahan. That can change, but Mahan's fielding percentage was 87.2 and Heady's was 90.7. Neither are all that impressive and couple that with their hitting and they can be easily replaced. Further, it is hard for me to put them to third where they might make even more mistakes, especially throwing the ball.
Sorry... I am pretty negative. Hopefully things are better than my current feelings.