I have always considered RABBLE as a descriptor for X-markers as a whole. What I was suggesting was a collective noun for a group such as when we get together at a Games or a Kilt Night. Kind of like how a flock of sheep does not describe all the sheep in the world, but a particular and recognizable group, e.g. Mr Jones' flock is distinct from Mr Smith's flock. Thus the Sett of X-makers at Gatlinburg or some such identifier.
I can see this logic, and I agree. The rabble is the whole of our community, whereas a sett is any local gathering, regardless of origin or home.