I kind of like the idea, but outright removing and preventing barriers feels too strong. Some heroes absolutely have to have their barriers or they might as well just not exist (Wraith and Warden are excellent examples of this as they rely heavily on those barriers built into their kits).
I could see changing the base passive so that it doubles/triples it's effect as well as applies Spirit resist reduction against enemies with barriers. BRS is already a very strong item, just that most people don't get it at mid-low elo because it relies a lot on teamwork. Making it so that it's just stronger resist when applied to enemies with Barriers makes it a situational pick, but very useful against those heroes.