I would honestly pluck a guy out of the college ranks as they are forced year in and out to reconfigure the lines with players coming and going in 3 to 4 year spans. Dealing with change and adjusting is paramount in the game today. Additionally, I would focus on guys that are developing 2,3 or 4 start players over the likes of a Bama where they are only dealing with mostly 5 star guys.
Coaching offensive line is just as much about working together as an entire unit as it is about fundamentals. Communication and understanding of the scheme.. and time after time that seems to be just as big of issue for the Packers under Campen and fundamentals.
I would have jumped at Bob Bolstad before he went to Tampa.
Guys I would have on a short list, but questionable any would come.
Rick Trickett would be near the very top.. but doubtful that he would leave the college ranks.
Ed Warinner has developed good offensive line play at almost every stop.. he I could see stepping out of the college ranks. Bonus here is it hurts Ohio State and Urban Meyer. ;)
Tim Drevno - has a very accomplished track record in working his way through the college ranks.. places like San Diego which was near the top of production in both passing and running under his direction. San Diego doesn't draw many 3 and 4 star players.. yet he turned them into very productive units.
J.B. Grimes - Float the opportunity past this long time veteran coach whom is not adverse to moving around the country.
John Hevesy - Not a long tenured coach.. about 10 years as a offensive line coach in the college ranks, but time after time has gotten results in places like Utah and Mississippi State.
A couple of names that I can think of.
"The oranges are dry; the apples are mealy; and the papayas... I don't know what's going on with the papayas!"