I am guessing that my choices are pretty much in line with yours: Bruce will get the nomination and Van should get the nomination. Bruce is a no-brainer and there is no need to go into detail on his accomplishments.
Van, on the other hand, should be on the Wall. Other than Myron Cope, I am not sure if there was any other announcer who was with their team for as long as Van (37 years). If he did not have the break from '71-'77, he would have had more continuous time with the team than Cope. He was the recipient of the Pete Rozelle Television-Radio Award. He was the voice of the Bills for their entire existence, until he retired. And the most important reason why Van should be on the Wall is that he was the announcing partner with my uncle, doing basketball games. Van belongs on the Wall.