Hear me out, I've just been thinking; people already sometimes have to use Duality on their Armor Crushes due to just not having the time or flexibility in their rotations. What if as a QOL change, a Duality Armor Crush gave you a double refresh, for 60 seconds of Huton duration increase? Maybe have the second effect halved/cut to a third or something if that's seen as excessive.

I can't really see this being that big a deal, and applying bonuses twice wouldn't really do anything to Shadow Fang or Dancing Edge anyway, the duration of the debuff refresh would be the same.