Game desperately needs niche utility items
and I don't mean locket. I mean items that counter specific mechanics.
For example, as previously said, we could really use an item that reduces the effectiveness of shields by either having an active that destroys shields, or a passive that damages them.
Another item we could use is an anti-dash item. Similar to how Tali has her anti movement ability, this one would allow players to deal with team composed of multiple dashing champions with this new item. Maybe an active that stuns any enemy that tries to dash near you in the next 5 seconds or something.
and last, maybe a bit more controversial, an item that prevents auto attacks from doing more than a certain portion of your health in one go. Basically meant for squishies to not die to 1 crit.