I like akali and I disagree. Just build some attack speed on her. What they should do instead is buff rageblade. Her passive benefits quite a bit from some attack speed seeing as how it has a built in devourer of sorts. Each auto dealing considerable bonus ap damage. It shouldn't be difficult to trigger the marks.
I do think its cool to have e trigger a mark like it seems logical/built for that. except if they bring it back then theyll likely need to nerf another aspect of her.
Item buff suggestions:
http://boards.na.leagueoflegends.com/en/c/gameplay-balance/QsAVNLnb-riot-request-to-have-these-item-modifications-added-to-pbe-for-testing
Tbh I always thought akalis kit was meant to be bruiser/fighter instead of assassin.
She has a lot of similarities to jax. Or at least had a lot when her w made her a tank. And now that her ultimate has a shorter range (the one thing that really identified her as an assassin) I think she fits even more into the bruiser genre. jax q and akali ult noe have the same range (700)
Jax has gap closer q
Akali r
Jax has counter strike when he's being focused or needs to cc people, akali has shroud.
Both character benefit from ap and ad.
The resistance boost jax gets from ult akali used to get from w.
Still her spellvamp can help her survive.
I actually prefer akali under the bruiser category, I just think she ought to be treated as such. A bit like what happened to fizz. Although I think akali should have become the new fizz since shehad always been a more sustain oriented champion, while champions with no built in source of sustain who wouldn't benefit from say spirit visage ought to stay glass cannon and go with zhonia like the old fizz.
I don't mean she should be building bortk, I just mean going 2 or 3 DPS items the rest tanky should be more common than going full DPS akali.
I'm not saying she cant be both.like amumu is intended as a tank but people still play full ap mumu, same with sejuani a month ago people stacked ap before cinderhulk. If you wanted to you could even make ap irelia work, its really not as bad as you think.
Bruisers are far less unlikely to cross over into the glass cannon world than tank too. Like leesin can be built full DPS even though at LCS level his optimal role is tankybruiser.
As far as assassin potential I think Lee fits more under assassin and akali in fighter. A full DMG Lee can get some pretty sick picks off and 100 to zero you quickly. They borrow a bit of both worlds. I think they should actually be found under both. Like how Annie can be both support and ap mid.
Akali's passive is like a built in wits end. So I really think you'd benefit from some attackspeed and enough durability to sit and auto a bit while spells are on cool down/in between spells. trinityforce rageblade I think could very well be recommended build on her.
just scratching the surface of what builds could be viable:
http://i.imgur.com/yvVv5oi.jpg
see this thread covering buffs to either rageblade, lichbane, gunblade.