The new rule is a national rule, not just in North Texas. I understand that the fiasco at D World is why this rule is now in affect. Blame the cheaters. Also, looks like most of the Mixed C teams in North Texas were 2016 bumps. I doubt any of those teams have any B players. As far as combined tournaments go...there are usually not enough teams to separate the classes. Who wants to play a 4 team tournament?