Yep, fantastic and extremely practical solution. Especially if they took the new nerfed Reprisal off role actions making the debuff a DRK exclusive thing.

Another way they could do this is to have TBN itself "explode" in an Abyssal Drain/Unleash ranged AOE when the shield is broken, meaning it would apply with a party member's TBN breaking and also make it good for multiple enemies.