Currently there are a lot of enemies in HoT that have stability bars, and it has also been shared out to bosses and powerful pvp allies like heroes and lords, however people who specialize in interruption traits gain nothing from rapidly decimating this bar. For example a thief with Superior Sigil of Draining, Pressure Striking trait, and Impacting Disruption trait is at a severe disadvantage against these enemies simply because a major part of the damage they would dish out through said interruption is non existent.
Anyone who contributes to the disabling of a stability bar should have their related traits and sigils trigger when the stability bar has been successfully depleted (thus interrupted and stunned). It is not overpowered as it can only occur once per character fighting the enemy and has the bar regeneration cooldown interval. This is not an unreasonable request as it makes sense and I do not understand why this has not been done already.