I'm concerned about our depth, especially at Oline, S, and ILB. TE should also be included but I honestly haven't seen enough of anyone besides Doyle to give an opinion. I'd include QB but if Luck goes down, it really doesn't matter, the season is lost.
We know there will be injuries at all of those positions. We were counting on Schwenke to be the 6th Olineman, but I'm not sure if he even makes the roster. Dude is a ghost. We don't really have a strong safety yet, and we're not sure if Bostic and Morrison are even our starters, much less who's depth. Heck, Bostic hasn't played since 15.
All that said, I think our starters are good enough to win the division. Great offense, serviceable D. But we all know the team that starts on September 10 isn't going to be the same team we see in December. Backup talent is crucial.