Campbell is an upgrade, but that's not a very high bar. Campbell isn't good business, though. He gets you nuthin beyond a win or two more, for a season or two more.
Definitely not Campbell, but certainly none of our "big three" either.
CG has to get this team through this season, so we gotta watch what we're gonna watch , but our long-term starter gets drafted next spring and the seasoned vet to ride shotgun for him is still playing for someone else. We'll draft Luck or one of those guys, and we'll have to pick up a guy like Brunell who knows he won't start but has something to teach the rook.
I doubt we want TE, RF or BB filling the role of mentor to a stud rookie. Brown hangs around because he's an athlete and an unkown as yet.