I think the issue is the passivity of it all. The DPS buffs come as a side effect of BRD's attacks while DNC's buffs are generated by using steps. Some people had asked for that same mechanic for BRD a while back but via playing note combinations on an instrument for buffs but the idea was given to DNC instead.
It might be more engaging if we had an oGCD that strums a harp to produce and maintain the buffs it currently gives. Kind of like an Enochian. Maybe name it Capriccio (short, free form piece of music) and have it replace Bloodletter via trait when the BRD soul is equipped. Have it deal sonic damage to the enemy and function essentially the same as it does now. The buffs BRD gives via its 3 songs could be activated and refreshed by using Capriccio, but they wouldn't give any buffs until you strum that harp. Maybe Ballad's buff can get stacks so it feels like the super buffing moment when you're strumming that harp in between every GCD. Would need to also make an AoE version to replace Rain of Death (which could then be repurposed as an AoE variant of Empyrreal Arrow).