Akali changes I'd make.

So we all know how Bad akali's win rate is right now and how how her ban rate is despite this. The changes I would personally make are as follows.

Armour reduced from 23 {+3.5 per level) to 23 (+2.5 per level) Magic resist reduced from 32.1 (+1.25 per level) to 30 (+1.30 per level)

Assassins Mark passive Ap ratio reduced from +70% to +55%

Five point strike (Q) Ap ratio increased from +50% ap to +60% ap

Twilight shroud (W) duration while in range of enemy towers reduced to 2 seconds. Obscure stays. This change would leave her ability to tower dive still an option to get in on a low health enemy and finish them off but wouldn't let her endlessly poke and combo people under towers just because she can reset tower aggro constantly and get away. Think elise going under tower and being forced to take a couple tower shots to get a kill before repelling to safety but messing it up or being stunned under tower because you didnt think before you dove causes you to think about that risk more before you do it.

Perfect execution (R) remove the stun on her first cast.