I dig the idea of Bruiser Akali

Being killed instantly is frustrating.

Not being able to see your enemy is also frustrating.

Personally, I feel like the not-being-seen is more important to Akali's identity than being able to kill people instantly. Moving her more towards sustained damage and long trades not only makes her less frustrating, but it also makes her more unique. We have enough instant-kill assassins in the game. An assassin who weaves in and out of a fight, constantly kiting and chasing her target, dancing with danger, is a much healthier and fitting place for Akali to be.