Dear. God. No.

As one who plays Dnc main and /dnc at every opportunity, I think this is a horrible idea. /dnc is already horribly gimped if you're used to playing Dnc main. The waltz calculation gives you a much lower cap, Haste Samba only gives you 50% of what you're used to, you're limited to Drain Samba II, you can only gain one Finishing Move per Step, and Reverse Flourish is capped at 60.

Gear is the only advantage? Please.

Haste Samba being weaker than Marches is NOT a fault in the job, that's how it was intended to be.