I have no clue how Leblanc hasn't been gutted yet
She has the perfect 1-2 punch of toxic laning phase where most of the playerbase absolutely hates facing her and constant lcs play. She has pretty much been first pick/ban in every region of the lcs for the better part of a year. Even during the cinderhulk meta where assassins fell out of favour leblanc has been a constant force in the mid lane.
Kassadin got remade for having pretty much the same issues. And to be perfectly honest I would rather face the old kassadin than the current leblanc. Atleast when he went in he had to stay in for a small period of time. And his laning phase was pathetic and abusable. Unlike leblanc who starts to lane bully at lvl 2 and never puts herself at risk due to her blink being returnable.