Our OL are not distinguished by their likely durability.
- Our starting right tackle has chronic back issues.
- Our starting left tackle is a recent cancer survivor.
- Our backup swing tackle is actually a cancer survivor himself.
- Our presumptive starting center is a second-year player with concussion issues.
- Our actual starting center is a rookie. Rookies traditionally hit rookie walls.
- Two of the three guards in our current rotation are rookies.
- The other one has never started a full season, nor indeed played well for very many consecutive games.
Wendell has been known to play a lot of snaps in a season and hold up well, but he's the only exception to this general rule.
My point is that it is likely that the Patriots will rotate OL for as long as they think they can. Eventually, some guys may fall out action due to injury or poor play, but I'm guessing that the shuffle will continue for quite a while.