Playing every snap is too much for the OL. An equal rotation isn't needed, but at least give the 2nd string a couple of series. We also need to build depth for next year or in case of injury. I also agree that it would help in the 4th quarter.
I didn't want to criticize Coach Cav for this, but looking at the philosophy, it just doesn't make any sense.
1) Starters aren't getting any rest during games, and that could lead to fatigue and/or injury
2) Backups aren't getting any in-game snaps, so they are less prepared if there is an injury to a 1st stringer
3) Backups aren't allowed to prove themselves in games, so there is no pressure for the starters, as long as they are doing good enough in practice
4) What is the need to carry 16 scholarship linemen if only 5 are going to play during a game?