I've heard a couple of rumors that once the current bad beat jackpot is hit at Bally's (which sits around 220K right now), the casino is changing the requirements.
According to this thread on the Two Plus Two forums, the BBJ will become quad Queens or better to be beat. Then, go down hand-by-hand.
By this account, it seems Bally's is trying to cash in on the craziness that was Caesars a few weeks back. Caesars filled the entire room with NL games and had people waiting on lists for, literally, hours. The BBJ got publicity in the local newspaper and gave some exposure to Caesars.
A high BBJ will draw in a crowd, but with such high requirements, who will be play there?