The offensive line is the biggest area of NOT sustituting in my view to our long term detriment. This may have been fine in year 1 so you can redshirt and save as much as possible for year 3 and beyond. But, as long we continue this play only about 7 guys all year then we are always putting in a new cast of characters with little experience. We needed to sacrifice in year 1 and if need be, year 2 to stockpile depth all over the team. Now, we are playing more youth than in the past but so much of it was inexperienced. I believe the O line injuries that happened in the latter half of the season is in part due to those starters not getting enough rest in the first half the year. The more snaps, the more chance of injury - it is a matter of statistics really. The more snaps you play, the greater than chance of injury. If you spread out the snaps and keep guys fresher, they are more agile and less likely to get caught in piles, rolled over and bull dogged to the ground, etc. Fatigue makes you slow and weak.
As for who should be playing, you'd surely think the coaches would play the best players as they know winning is important and its not like we are so overstocked with talent we can win without the best out there. I have liked Ozigbo since the first few carries two years ago and I still do. I never liked Newby and would have had him 4th string. But, that aside, at this point, if the games aren't winnable, then we need to think next year and beyond. This should always be the plan when your are building. Once you reach thetop threshold, you can begin to level off the stockpiling and depth increase but you should never stop until you are truly 3 deep with guys who are ready for prime time players.