As with many rules changes, when being considered, this is problematic. There is no actual rule that says it is allowable to jump the CB off the table while pocketing a ball hanging in your opponents pocket.
There is a rule that says that a ball pocketed in you opponents pocket while committing a foul comes up. There is a rule that says that a CB off the table (as well as a OB) is a foul
Would you eliminate a CB off the table being deemed a foul? Would you just make an exception for the last ball on the table? Would you allow all balls pocketed in your opponents hole to stay down, regardless of a foul being committed? Anything you write will effect other parts of the game, unless you make a very situation specific rule, which is a bad habit to start cause it just complicates our rules.
It would be far more acceptable to me to simply call an unsportsmanlike foul, if the shooter didn't announce his intention to jump the CB, simply for safety's
sake, as I can't imagine any other reason to try to curtail ths shot.
I believe at least, that most one pocket players would rather keep this option alive and a part of our time honored rules and history. I see consideration of eliminating this option as a "watering down" of the games many intricate and sometimes subtle strategies.
JMHO