In the 2019 Bill James Baseball Handbook, Bill introduced a new stat meant to evaluate worthiness for induction to Cooperstown. He’s called it The Hall of Fame Value Standard.
The Hall of Fame Value Standard combines two statistics that assess player value -- Win Shares and Wins Above Replacement (the latter is multiplied by four to put it on a similar scale as Win Shares). Summing them generates the stat. A score of 500 is considered to be the bar for Hall of Fame worthiness.