The embarrasing state of AP junglers
It's bad enough that AP centric champs in general got the shaft when it came to the general price hikes/nerfs of almost every single AP item, but I don't think anyone took it harder than AP champs in the jungle.
Look at the winrates, there's not a single Runeglaive user in the top 20. In fact, you don't hit a SINGLE Runeglaive user until you reach Fiddlesticks (Who is notorious for skipping his jungle item entirely) and then Eve.
Play especially close attention to the winrates of Eve, Fizz, Diana, Nidalee, Elise, and Ekko. Notice how before 5.22 they were relatively solid champions with average win and playrates, but as soon as that patch lands their stats take a catastrophic nosedive.
It's bad enough that almost all of their main items got nerfed via price hike or direct change in stats, but even worse now is just how damn inefficient Runeglaive is for the cost compared to the likes of Warrior and Cinderhulk. I understand Riot may have thought the Runeglaive powerspike may have been to strong in S5 but completely swinging it the opposite way and making worthless isn't ideal balancing.
The fact of the matter is SOMETHING has to be done about this and it needs to be done soon, this disparity is a very large reason why hyperscaling tanks are out of control in general, not only because of their ridiculous scaling but because of the lack of viable AP threats in the game allowing them to just stack Armor and HP and become unkillable gods