esports guy

Pretty simple question or maybe a big debate? I'm wanting to be fly on the wall here. I want to start running local tournaments, but I want people to bring their own controllers. Should I allow a Mega Modz controller with Rapid Fire? Is there allow the controller but not the feature? I don't mind physical features like moved buttons, but rapid fire type features I'm more worried about. I want to run a fair environment but allow flexibility of hardware for personal preferences. Thoughts?