The players shouldn't be able to look at the rack. Let them "slug" each other, at least it'll stop the easy "break and run" that makes the game monotonous.
The ideal way for Pros to play is with a Referee and they have to break without inspecting the rack for "cracks".....if the Referee accidently leaves a spit it's ok if the player doesn't benefit from it......not looking is the only fair way to achieve uniformity.
In other sports the Referees are trusted to put the ball where it should be placed, and perform all other aspects of their job without the players being allowed to "look over their shoulder" (so to speak). There's a VERY GOOD REASON players are not allowed to "double check" the referees....they would do the same thing the pool players are doing.....slow down the game to try to achieve a physical, or mental advantage.

.....it's not "bad," it's just human nature when a real competitor is in "BATTLE"!!! :thumbup:
Athletes can sometimes be very "picky" and borderline O.C.D. - the other players, fans and referees should NOT be at the mercy of this type behavior. The sure fire cure is have a neutral racker and NO ONE can inspect the rack. That's how we used to do it and it and it worked just fine.......why did they "fix" it when it wasn't broken?

It's simply a matter of management, implementation and supervision.
'The Game is the Teacher'