Is there a reason that Akali W should have a blink on activation??
A champ with such a strong post 6 (3 dashes) and a safe pre 6 doesn't need to have another piece added to her defensive capabilities.
If the akali player buffers the W activation correctly, then she can dodge displacements in the same with that Ezreal or tristana can. But W has no wind-up time. And since it also makes her invisible afterwards, she can keep from being bursted if a stun lands.
I understand that Riot is looking to rework Akali at some point in the future, but in the meantime she doens't need this on her kit.