VanEeghen over Ritchie. Has two rings and is the only modern era fullback I can think of with three consecutive 1000 rushing seasons! Also was money on goal line and in "killing the clock" situations, see the 1980 championship game against the Chargers for reference.
Furthermore, I put Branch ahead of Brown, Mickey Marvin at RG (if you don't want to move Wiz over), and possibly John Vella or Henry Lawrence at RT. Even though Kennedy was great, so were those guys. And don't forget Bob "Boomer" Brown, who finished his HOF career at RT for the Raiders.
Finally, I'll say Marcus over Bo. Bo is more electrifying, Marcus is the better football player, and played his best in the biggest games. True measure of a great player.
And no, I don't rate Gannon for consideration. He's behind Snake and Plunkett.
"He's relentless, shoot him in the head is the only way to stop him. If Howie's alive and still kicking he's coming."
-HOF guard John Hannah