League needs more item diversity in general, honestly
I used to think it was just support, but honestly...I think League has this issue where there's an item or two where you either live and die by it or you're simply NOT viable.
Ruined King, for example. All possible users of it in the bot lane, like Lucian and Ezreal, are considered strong. Only real adc that doesn't use it while not being weak outright is Cait. When I started playing IE was mandatory on every adc. Then it became pen builds and pen items that dominated the top tier. Now we're here, on Ruined King rushes.
Almost every burst mage jumps on Morello, but now Gunblade is making its rounds.
Supports have a near full inventory of mandatory items now. (Vision + Boots + Locket + Redemption)
Most all fighters take Cleaver.
So on and so forth.
Kind of tired of things being in a state where there's one item that's super busted, and the meta revolves around its abusers. It gets nerfed, and then it's the NEXT thing that sticks out that everyone jumps on at the same time. We're always in this state of jumping from one item to another. Main thing about the support role that's different is that it's ALWAYS FUCKING LOCKET THAT'S BROKEN LIKE HOLY SHI-
Anywho, point is that there's no real sense of there being a real balance of power between items/champions. It's less like "balance" and more like whack-a-mole where Riot just slams the thing that pops up next...unless it's support...then Locket's top tier for 2 years and counting since I started playing.