Looking over the anti-champ effects, Overload and Unstoppable seem to have far more consistant means of dealing with their champ types. Meanwhile Barrier requires Radiant, Unraveling, or Volatile rounds to deal with the shield unless you have a anti-barrier artifact mod. I think a good change Bungie could do is making debuffs basically put a crack in the barrier champ's shield while it is active on them. If you shoot a target with unravel on them, the shot may not trigger damage, but the unravel debuff will still trigger and deal damage to the shield for you. Volatile could also still build up against the target and instantly break the shield when it triggers. Main reason for this idea is that without kills for the Thread of Propagation or Echo of Instability, you wouldn't have anti-barrier on your Strand or Void weapons without having an artifact weapon perk. Just feels like a better choice than exclusively relying on the artifact for anti-barrier on weapon types you may not enjoy or having to deal with anti-barrier being inconsistant to proc. Solar is a bit more fine as the fragment for that only requires a powered melee hit, but still would like to see Void and Strand get a bit of an improvement in that sort of situation.