Stop trying to fix everything that is not broken. The harder you make the game for pros- in the end the harder you make it for everyone else- because all the aspiring pros or folks who like competition will want to play under the same conditions- so now pool halls will be forced to accommodate the more difficult playing conditions- now even more of the general public will shy away from the game because it is too hard.
Golf has had serious issues for some time now in attracting new participants- golf equipment stores were closing like mad and major retailers had scaled way back on promoting golf equipment- longer and more challenging golf courses only served to make the game take much longer for the average person to play a round and also made the game even more frustrating for most of the general public.
Covid seems to have helped that a bit due to the distance and outdoor factors being part of that game. You want to chase more folks from whatever pool halls now exist post Covid- start by making the pockets even smaller - any talk of making the game more difficult will eventually lead to someone looking to profit from an equipment change.
Look- I grew up on Gold Crown 1s - and every table in a room had at least 4 3/4 to 5 inch corner pockets except for perhaps one table by the front desk. The general public was able to reasonably enjoy the game from the outset. I do not see the same reaction today from the general public on those Diamond pro cut pockets installed in many rooms to satisfy the more hard core players. One of the problems was that the game itself was changed to accommodate ESPN- ball in hand rules for 9 ball and 8 ball- so we ended up moving to tighter pockets to "tighten up" the game.
Now most of the general public tries a few outings on a Diamond pro cut and then walks from the game forever. Who are we trying to satisfy here?
I have to laugh- most of the folks on this site can't run 40 balls in 14.1- yet they scream that the game is too easy
Play GREAT POOL by Mark Wilson constantly refers to the 10,000 hours required to get to pro level--10,000 hours! The game is already difficult enough!