The barriers are very dominant and overpowered in the meta and a simple fix without nerfing them (to keep them viable) is to add a 1600(?) item similar to serpent's fang that just reduces the shield received on that hero by a set amount (30%?) - giving a counter while not killing them entirely. (maybe even make a new tier 4 item that builds out of healbane + this new item and gives both antiheal and antishield and something else idk)