Light's not going to be happy about any move to right tackle or guard, as it will hurt him substantially in his upcoming contract negotiations. Then again, he'll be even more unhappy about being benched. With a different player than Matt Light, this would likely get ugly. Light's a consummate professional, so I would expect him to avoid histrionics or public negotiation, but there's going to be a problem if he doesn't get his LT job back.
I agree that Vollmer has to play, and he has much more upside than Light at LT. I would expect them to bring Light back slowly from his injury so they have more time to assess Vollmer's developmental trajectory.
I also am not a big fan of Kaczur, as I think he's very inconsistent and lacks functional strength for RT. In fact, he's probably a better LT than an RT, and to me he's an ideal swing tackle.
As for Light moving to RT, keep in mind that while he would see less of the agile Freeney types, he would face a much stronger set of DE's. His drive blocking will likely be less effective than it has been at LT, and he'll be challenged by more bullrushers. It's not guaranteed that he'll succeed or necessarily be an improvement over Kaczur. Similar comments pertain to uncertainties about Vollmer being moved to RT.
