Min requirements i would say at least 8-10 seasons played , 1x Super Bowl champ and/or at least 2-3 super bowl appearances. 100 + games played and of course stats , you can add more to requirements to that but that’s what I have off the bat
Each teams owner vote for the players that meet the requirement that they think deserve to be a hall of famer , if the player has enough votes in favor , it is pass to the committee and they would decide if the player is Hall or game worthy or not.
It would be fun if it is done every 3-5 years the week before the Super Bowl.
Now what if the player played for 3-5 different teams ? Then you pick the team he played the most games with or the team he got his Super Bowl with or had the most success. I also think they should have a winning record not matter what as a requirement , because it would be kinda trashy to have a hall of famer full of players who lost more games than they won.