And McDaniel is a possibility, but I have a hard time judging offensive linemen. I know Matthews made 14 Pro Bowls and McDaniel made 12, but what other measures do we have for offensive linemen... just opinions of the voters who hopefully saw them play? I mean, consider these guys:Willie Roaf - 11 Pro BowlsWill Shields - 10 Pro Bowls and countingLarry Allen - 10 Pro Bowls and countingJonathan Ogden - 9 Pro Bowls in a row and countingOrlando Pace - 7 Pro Bowls in a row and countingAlan Faneca - 5 Pro Bowls in a row and countingSteve Hutchinson - 5 Pro Bowls in 5 years in the NFLWalter Jones - 5 Pro Bowls in a row and countingOlin Kreutz - 5 Pro Bowls in a row and countingIt's hard for me to distinguish which of these guys truly deserve to make the HOF. (Clearly it's too early to tell for some of them, just trying to illustrate the difficulty of distinguishing elite OLs from Pro Bowl caliber OLs.)
The top four guys you mention are more than likely to make the HOF. I would say at least three of the other five will also. Some of them will be first ballot. Randall McDaniel is a lock to make the HOF and should be in this year. We are talking about the best players at their position for the length of their career. He more than qualifies.
I wouldn't disagree with you, but why those 4? Is it the Pro Bowls? Or do the Pro Bowls for offensive linemen happen to more accurately represent the best offensive linemen every year, meaning 9+ selections truly reflects dominance? I ask that because people often dismiss Pro Bowl selections for other positions as being overrated due to popularity contests, selections due to injury, etc.Also, why 4? What is the right number of offensive linemen to induct from one era? In the modern era (majority of career played since 1946), there have been only 30 offensive linemen inducted, including none whose careers ended after 1995. So far, only 4 have been inducted whose careers ended in the 1990s, though 9 have been inducted whose careers ended in the 1980s... wide disparity.