Akali smokescreen W blind?

Wouldn't it?

A wide range AOE blind... Akali would literally need to flash W into the enemy team to singlehandedly win teamfights. Even against a solo target or a gank, casting W would force the enemies to disengage.

So, please no. It's like giving Draven cashouts on assists - it might sound somewhat ok, but it would definitely break the balance of the champion.

Yes. Quinn's blind and Graves' blind are already aids to play against but at least they have to aim it and it has to hit the target for it to work. Akali could instant cast it over her target and then go to town on them without them being able to do anything.