While I know we are all doing fun theories, this sort of idea holds a lot of water when it comes to guessing accurately. I remember the lead up to ShB when the BluFever leaks were pretty much known to be accurate, a good number of people kept espousing how Dancer was going to be a healer role. After I thought about it some, I thought that healers, who primarily wear large heavy (and usually white) robes wouldn't really gel with a job that's all about moving and dancing around.
And then of course it was later revealed to be Aiming user.