Solo lane feeding balance.
SO here's the thing. Last season, with junglers and jungle assassins being a lot stronger, even if a solo laner got fed, the jungler could still try shut them down. These days, instead, if a solo laner gets fed, absolutely nobody stands in their way. They'll do what they please. If they get far ahead enough, they will just bulldoze anything in their way, with almost no counterplay.
I noticed all this today while playing Kha'Zix jungle (my main), vs. a lot of Zed and Talons. If the match was more or less balanced, I was able to heavily snowball in my lanes' favour. BUT. If a Zed or Talon mid got fed three kills... it was over at 6 minutes. Literally. They would not only be un-gankable by a jungler that is 2 lvls behind (junglers can't really compete with solo laners' levels, especially if they are fed), but they would also start roaming around the map deleting my other lanes too. I felt extremely powerless in those situations. And it happens even if you play tank junglers.
Onto what I think would be an appropriate solution: I think that anyone who gets fed on any side of the map should not automatically become an unstoppable force. I think junglers are too weak to turn games around right now, even if they are skilled and outplay enemies. But I might be biased as that is my main role. I think we call all agree though, that people should have counterplay options. And having fed Talon walking around the map one-shotting groups of three people with an ult just because he was laning versus a noob does not seem like a lot of counterplay possibility to me. I hope our good old frined at Rito address this. Oh, and this applies to solo lanes tanks BTW. Try kill afed Garen/Cho'Gath? Good luck with that. They'll sit for entire minutes under your nexus turrets while they kill you. So yeah, cut on the solo lanes feeding, or give other people more strenghts, please?