As DNC the only huge problem I saw was the inefficient recast times on Healing Waltz and Waltz4+. You shouldn't have to choose between removing 1 ailment and curing over the next 15/20 seconds. But this has already been said, and scoffed at by SE. Their logic is that Waltzes can't be interrupted and are instant so they have to have a huge gaping weakness of recast and utility.

We already have a high dual wield, and the highest Dual Wield increase in a single piece of armor. I don't see our dual wield base surpassing NIN.

The Hybrid steps (mentioned here as Sambas?) are a good idea. If they were sambas I don't see myself using them much over Haste Samba.

Reverse Flourish is already kind of potent, especially with merits and AF3. I don't see the harm in increasing it a little though, maybe to have extra TP to Samba/Waltz before weaponskilling.

Damage dealing was never our strongpoint, but Abyssea changed that. You see DNC going around soloing EVERYTHING in that place. Abyssea is not forever though~ or is it...?

Increasing step potency would be nice, but the duration of the effect increased would be better. Once at lvl5 Daze you're just wasting tp to keep the effect at max.

Love DNC, will always love DNC no matter how many times SE kicks it in the teeth.