"As a point of comparison, let's go back to 1988. We already have 34 Hall of Famers who played that year. There were players at the end of the line, such as Steve Carlton, Don Sutton and Mike Schmidt; there were in-their-prime stars, such as Rickey Henderson, Cal Ripken and Tony Gwynn; there were rookies, including John Smoltz, Randy Johnson and Craig Biggio. Smoltz went 2-7 with a 5.48 ERA; you certainly wouldn't have pegged him as a future Hall of Famer then.
So 34 Hall of Famers from 26 teams, a little more than one per team on average. Except remember that Roger Clemens, Barry Bonds, Mark McGwire and Rafael Palmeiro all were active that year and would be Hall of Famers if not for PEDs. Curt Schilling started four games as a rookie that year and will eventually get in. Edgar Martinez got into a few games that year and he should get elected next year. That's 40 likely Hall of Famers if you include the PED guys, and that doesn't include other future possibilities such as Gary Sheffield, Lou Whitaker, Kevin Brown, Keith Hernandez, Dwight Evans and David Cone, who have numbers worthy of consideration.
But let's go with a list of 40 active Hall of Famers. That may seem like a lot, but that's a 1.33 ratio of Hall of Famers per team, lower than the historical rate."