There Is No Dancer (yet)

[Kaurie]

You're actually speaking some kind of sense - you need to stop doing that in these parts.

(That's honestly a very cool idea and with the battle system changes, not entirely out of the question. The only issue would be making them unique and balancing them in such a way to not make the base jobs redundant.)

Definitely. The easiest way to do that with at least 2 of them above is to make the final role not equal to either of the contributing roles. For example, RDM => Tank and Dancer => Healer. That would be hard to pull off in a way that makes sense though (i.e. why would a Bard + Monk make a healer?).