So it's taken me a bit to get the time to review this but now I have an I really enjoyed going through the details. I can tell all the XI influences and I feel you've transitioned the XI equivalents quite well into the XIV universe.

What I personally enjoy a lot is the whole HoT-mechanic with the dancer's aesthetic. As a Druid healer from WoW who really wants a Dancer in XIV, this really hits two birds with one stone for me =D

From a more theorycraft standpoint, as with any theoretical piece, values should be taken with a grain of salt and can always be tweaked for fun. I think the one crazy tool in this entire kit is Chocobo Jig combined with Fan Dance. A 50% Haste value on a single target is INSANE and theoretically doubles the target's DPS for the duration of the buff. That is the one thing I'd look at most out of the entire kit you've proposed with minor tweaks probably towards the %-recovery on your TP and MP sambas. The rest of the kit at face value looks fun.

Good job