While I am find with WMMA staying on the cards, and it has given some really exciting fights over the years, the biggest problem IMO is where they are placed on the cards.
I just wish they would put them in more appropriate places on the card. The fights are often way too high on the card where people are expecting much better fights. If the fights sucked but were at the bottom of the card nobody would complain.
I would also ask they stop headlining fight nights with Women's fights which are questionable for a main card of fight night, let alone main event. I think people get more annoyed when it is being force fed in prominent positions.