The Juggernauts & Darius
So the goal of the Juggernaut update was to update some of the more neglected champions in that class of champion, and to make the whole class feel viable again. So that was the goal, but in the process the Darius update made a juggernaut that made every other juggernaut irrelevant. The whole class trades and fights by sitting on your face and dealing tons of damage over a period of time, but Darius takes that play pattern and throws it out the window, long trades with Darius is the worst idea ever. Seems like the point was kind of mute.
Edit: SINCE THERE SEEMS TO BE A LOT OF CONFUSION AS TO WHAT I WAS TRYING TO SAY LET ME CLARIFY: Pretty much every Juggernaut needs to sit on you for a while to trade with you, that's what they're known for and that's their intentional play pattern. However, Darius makes it impossible for other juggernauts to deal with him in lane because him doing that is 10x better than most of the other Juggernauts. He wins those long trades vs immobile opponents so hard after getting a 5 stack that most Juggernauts cannot really lane vs Darius. They made a class dependent on a certain play style (sitting on you to death) and made one of those members of that class so good at it that the others can't really win a lane vs him.
And before someone pipes up saying that Garen beats Darius in lane, no, most of the time he doesn't. Lol.