The question is who would want to watch pool played on pockets that tight? Pool already has a hard time drawing viewers, there is no reason to chase the few that watch away with long drawn out safety battles. There is nothing wrong with seeing good volley of safeties but it doesn't make for good viewing if it becomes 50% of the game.Everything fits a pool pocket. If you use my 'design', you can get down to 3.25 before it gets impossible and that's only slamming 'em down the rail.
What you are calling less fit is simply less slack.
View attachment 937425