Well, That's the problem being the World's Richest Cricket Board. If you aren't amongst the richest boards, Their Players won't start sledging their opponents because they may get a cut off their 10% of their match to 88%. Considering the players playing for the richest board, They have no fear of any bans as they would perhaps accept their Match fee redeemed by teh Central board ICC, Still get as much money for the match as the player who played Sensible cricket, Without sledging, Showing "No"; aggression on any Opponents' players/On field/Off the field, serving for the Boards of the nations compared to as less richer Boards.
That's the reason why richest boards in the world have more sledging players in their teams. Whereas, Less richer, Financially troubled boards stay calm and keep their cool when playing against their oppositions, Example = Sri Lanka, Inspite of getting egged, Stayed calm. Whereas India were to take their place, Would have informed their emporer(the other name of BCCI) to take immediate actions' or else they would take their revenge.
I DON'T THINK That The BCCI's Idea will work. They have imposed many Rules into the cricketing' Arena Which Have Had Failure at written at it's Peak and just turned out to be just a silly & spread rumours, Not nothing more than that. If they were to change anything, They will have to change their mind-set, Not rules, Pools, Dools, Whatsoever and Should try to and use their power properly. As, Many players have been disgusted with the things going on with the BCCI, and have announced retirement in the ende. That's what even Kapil Dev said when he was packed with the hatred of BCCI.