Ahri nerf way too harsh
With the Ahri changes in pbe, from her w and r, she lost a total of 31% ap ratio. 16% from her w and 15% from her ultimate. For compensation, 10% ap ratio was added to her charm.
The problem arises here. First of all, her charm has a flat 12 second cool down. Her w has much lower cool down than her charm and was a gauranteed damage, her charm should be stronger because it is not gauranteed. There is no compenstation for this. Second of all, if we do factor in the aoe damage she lost, it is also a big amount. Her charm 10% ap increase does not factor in the aoe damage that she used to apply. Her single target damage was gutted by 21%.
For my solution i would say nerf either one of them, not both, and add the equal amount of ap ratio lost to her charm and lower the cool down on her charm. Or at least make her charm have 2 sec duration at lvl 1 since her late game was gutted.
First of all, what is her identity? Is she a mage or an assassin? If we do not get this straight we cannot choose the best option. 
PS: Why does everyone hate ahri so much in general? People cry when adcs are nerfed but when ahri is nerfed everyone agrees with it and refuses to listen to those who speak. Where is justice in this? Riot is also refusing to listen to people who play ahri....
but will less damage and CC, but a lot more mobile and has sustain in her kit