It is disillusioning to see the replies here. They reflect the average attitude and level of intelligence of the community.
Before the recent rework her play rate was around 8% with a 47% win rate (champion.gg and op.gg) So what are you guys on about? She was never oppressive and in plat+ elo you needed to be very good to get an advantage in lane. Above that..high diamond and upwards she was not even played because people could counter her very easily.
The rework moved her damage into her passive which means that instead of having to balance several parts of her kit now her whole kit revolves around ONE THING, the passive. Having only one thing to balance opposed to several made Leblanc even more unbalanceable hence she was pushed into the gutters and left to rot.
What is so hard to understand about this, The guy responsible (Ricklessabandon) has shown complete incompetence when working on champions. He destroyed Viktor / Azir / Nidalee / Akali / Leblanc...all these great champion are now useless in League.
But of course you guys want to have it easy..you don't want to learn to play against Leblanc or any assassin. You don't want to learn what "mispositiniong" means or what non-mechanical counterplay stands for? You don't want to itemize against Leblanc but you are fine with Annie instabursting a whole team with point n click abilities.
You guys deserve a dumb game and apparently Riot is going to give it to ya.