Akali seriously needs to be nerfed late

So, I'm not talking about early game akali. Pre 20 minutes, she's not even that bad. But after that, she's complete, and I mean COMPLETE BULLSHIT. First of all, she heals so much you can barely put a dent in her, I play fucking leona and e q stun then reset with r, e q again and she just heals all the fucking way back up to full before my team can even reach her because of her freaking shroud that no one can see her in. Now if they have 1 other carry, everyone will be focusing akali, she'll constantly be healing back up and the carry will eventually do enough damage to bash in our whole team. Akali late game is bullshit, that's all. Even if she's behind like 3/9 or some shit, she eventually comes back and becomes the late game monster we all know and hate.