I was wondering if this could be added.

Say you're fighting two enemies and the off target is casting something interruptible. I think it would be cool if HR could determine with the GCD time you may currently be locked in as well as maybe a little lee-way time for switching targets if you could use your Avenger's Shield to interrupt as a priority over Rebuke (the default kick). It could use the nameplate icon and HR cycle button to show like it does with all other enemy cycling spells. And not the just off targets but it could evaluate for the current target too of course.

Further than that, there's a legendary for Kyrians called Divine Resonance that will cast a free off-gcd Avenger's Shield every 5 seconds for 15 seconds after using the main Kyrian Ability, so 3 in total starting 5 seconds after you use the ability. It would be cool if HR could do the same thing with these free Avenger's Shields.