I think a big part of Kemp’s legacy is the respect he commanded from everyone associated with the AFL. He started the players union and was supportive of black players at a time when racial tensions were high.
Kemp made the AFL All-Star team when he only played about 4 games in 1962 and also made it in 1969, when the Bills were awful and Kemp did not particularly shine individually.
Kemp was kind of like Peyton Manning, who also seemed to be universally respected.