Thanks...
I think our group will plan to have some introductory rueda classes open to those who have already taken our beginning salsa class.
I agree the possessiveness of this is silly. I remember a few years ago when there were only two a cappella singing groups on campus (one all male, the other all female). When additional groups were formed, some of the members of the established groups got a bit upset. Oh well: so now there are two all-male groups, two all-female groups, and one co-ed group now. I don't think it's anything "bad" to have that.
But yes, I figure that they would see this as an opportunity to help raise the level of their recruiting pool so they can have higher-quality dancers and performances. Unfortunately I don't know who their advisor is, but I'll find out if that group decides to raise a fuss over it.