Almost every FBS team is one QB injury away from a disaster.
The RB argument is silly. We have better depth there than we've had in years. Health-wise, Hurd will be fine and Kamara is as close to a sure-thing RB as you can pick up on the recruiting trail. 95% of FBS teams would kill to have our RB unit.
In all likelihood, the OL WILL see a dramatic improvement. I'd wager that we'll see a similar jump to what we saw from 2010 to 2011, from nearly dead last in FBS to around 35th in the nation.
7-5 would be a failure next year. We will outtalent four teams significantly (BGSU, Western Carolina, UNT, Vandy) and three teams by a decent margin (USC, Mizzou, Kentucky).
We will be roughly equal in talent to OU, UGA, Arkansas, and UF, and 3/4 of those are at home.
Bama is the only game where we'll enter with a decided disadvantage, and being at BDS doesn't help.
It's time to win now. In 2016, Sutton, North (possibly), Maggitt, Randolph, McNeil, Pearson, Pig, Kerbyson, Crowder, and Jackson will all be gone. 10 starters lost.
Plus, some of the stud juniors in 2016 may start saving themselves for the draft and taking plays off. It's not unheard of and Mel Kiper even brought it up in his assessment of why UT can win in 2015 instead of waiting an extra year.