Come in and do mobility and movement. Get warm and address any issues you may have. Bonus: Guess what the Open WOD 17.5 is going to be, the closest person to guess what the actual Open WOD 17.5 is going to be will be able to pick or make up their own WOD fo the gym in the near future.
You have to post exercises and rep schemes and minutes or how the WOD will be conducted. You don't have to be 100% accurate, just more accurate than everyone else. The more you get right about the WOD the better chance of wining a chance at picking a workout!