I would generally tend to disagree with you about our depth. I'd say it's pretty good. Injuries haven't been a reason for the team's failure. They could have been a reason to tank, but when we had numerous injuries 2 seasons ago the backups stepped in and performed quite well. The same happened this year.
I wouldn't say this as a knock on our starters, but I feel pretty comfortable that if almost any starter on the team goes down, we have a backup who can fill in and the team won't be missing too much.
This, of course, with the exception of the quarterback position, which I didn't think would be a concern heading into the season with Losman there, but I was wrong.