The it is just a simple case for you not to slect any players that have played less than e.g. 75 games.
You're right, then if you think this way you can abolish the game limit at all...not a problem, obviously, I'll surely select players with a higher number of games.
I'm still thinking that it would be "strange" to see players inducted in the HoF with so little games, but probably it's not my business if someone desire to do it...
...last but not least, thanks for the clarification, I was not aware of the possibility to retire the number.