Unlimited upgrades from any fare is why I direct almost all of my flights to CO.
If that changes in any way, I'll take Duxfan's place as the biggest fan of CAK in northern OH.
I do believe that similar OnePass status passengers should be upgraded based on fare class (e.g. a Silver with a Y ticket gets upgraded before a Silver with a B ticket).
HOWEVER, if I'm ever in coach on a CO domestic flight that takes off with empty F seats......Adios, Gordo.
In addition I'll go on the "lecture curcuit" in CLE doing whatever I can to get other biz travelers to fly out of CAK.