I agree the game is now balance. However, I think it took too much time till the game reached this point. 
Just look how this game looked a year ago…
Fenix OP, Maiev needed 4 patches (=nerfs), before she lost OP as hell status, Tracer OP. Blaze and Malf were first picks everywhere (do you remember 40 seconds cd on Bunker?). Meanwhile, Ana, Tyrande and Nova were unplayable trash. Raynor was just a big ranged minion waiting for his rework. Chen…