The Rumble could be the best PPV of the year by far, but they ruined it years ago by guaranteeing the winner a shot at a championship title at Wrestlemania which eliminates all but about 4-5 entrants. There's an old saying in marketing that "predictability is the enemy of engagement", and when you know that 25 of the 30 entrants have no chance that increases the predictability. Can't really do anything about the leaks, that's the media doing their job. If you want to make money, bet on the favorite the morning of the event. I think one of the best ones was in the late 90's when the tide was starting to turn from WCW to WWE and they grabbed a couple of guys who were just released from WCW the week leading up to the Rumble. They didn't even have entrance music for the WCW guys. Other than the times the winner wins a vacated championship hasn't it always been that way?