I don't see how that would be a solution at all. It could stick for one pitch and not the next or the one before because you grabbed the rosin bag again. How would a player know the right amount, the right mixture of sweat and rosin?And if you feel it is too much as you sweat more, you wipe it off on your pants, or it gets on your glove. Sure, the way it is now is ripe for abuse, but you could not be meaning to abuse the the use and do anyway. If rosin is legal, it should be legal. Or don't have it legal, but it should not be subjective. With what you propose, it would be variable with each pitch as sweat changes or you went to the legal rosin bag one too many times. The fact that the pitcher did what the MLB official told them to do and used alcohol to clean it off, and that caused the increased stickiness, and then they get ejected (and suspended perhaps) for what it caused, is ludicrous.