I agree that Dancer is not complicated. It's just busy during its burst phase. The priority doesn't change during the burst in any real way, it just forces a bunch of procs so you're spamming as many of them as possible. It's not a perfect analogy, but I feel they play like a combo of RDM (simple rotation with upgraded procs), NIN (high apm) and old Bard (heavily proc based). None of which is complicated.