I was actually going to get in touch with you about this as well. Along with Zander. I don't know what you have in plan but, could there be a way to combine both of them? *shrugs* I don't know but, I'll try and get on as much as possible to chat with you and figure it all out. Along with Zander, for a lot of things still. I was so tired I forgot to ask him a HUGE question.
1. Reason I don't want a "ref" involved is, it could create bias issues, or accusations of bias. If one of them is friends with another from a different group, they could make it so that they don't get through it quickly. Also, people wouldn't have time beforehand to make strategies. They get a random 4th that doesn't know their playstyle or strategy? A SS would do just fine.
2. Some people might not have their AF1 gear? I believe I discarded some of mine. >.> And while people might know it in and out, it only gives them a slight edge. People have all the time beforehand to plan ahead.