The Akali changes

Personally I think they were failed. I mean, she become top tier again. Her chase potential and escape potential increased even more, by giving her extra range as she lands in front of the target. And her kills are mostly by chase and killing runners. Not to mention how difficult it is to predict where you want to use your small skillshots, as you have to take both your ally and Akali into account extremly much.

And don't get me started on her Crescent thingy. 40% cdr and she can use it with 0.6sec cooldown. I don't know about you, but that's way too much for a champion that's deep in their teams. I mean, why pick Darius when Akali is now everything that he could ever dream of?

Before the buffs, she wasn't even that bad. She was just niche, but she was still a really strong pick, but people stopped crying about her so Riot believed that she wasn't good anymore, while in fact that she was viable and balanced as a single pick.