Riot Lets talk about Kha'zix
Kha'zix was released 09/27/2012 and took assassins to a extreme level with the Utility/Mobility and Burst damage, so i expected some changes. Also To save you time I will tell you the purpose of this discussion. Kha'zix has underwent some changes if you think he is fine don't mind the guide but if you feel he is not as useful as other assassins of his kind continue reading.
First off I would like to say I'm not saying revert him back into the freelo monster that he was on release, but to give him something to work with. Kha'zix was nerfed do to very little counter play and being able to delete someone instantly do i agree with some of the changes yes. The only thing I disagree with instead of tackling the problem for what it is , he was nerfed in areas that did not need to be nerfed. For example his problem was the insane damage on his Q. They removed the missing health and the bonus damage from it and nerfed the isolation damage as a whole. Currently alone it does mediocre damage in team fights unless your fed you don't his hard enough to be considered assassin. Also changed damage scaling on his w and removed isolation damage from that. To me they took away his identity, Kha'zix was suppose to be THEE CHAMPION TO PUNISH YOU if you decided to miss position. But now his isolation range have been nerfed to an unreasonable amount and now turrets even count as allies. But i know this argument will go no where just by complaining and not showing any good example of why he should be changed. Kha'zix is an AD melee assassin right? So lets compare to the only other 3 Ad melee assassins. You have Talon,Rengar ,and Zed. (other champions are debatable ad melee assassins but where going to stick with these 3.)
We will look at there risk and rewards. Talon/ (Assassin)Rengar- Actually share the same risk. They both have to jump into the enemy team to get to their target with no escape afterwards (Plz don't debate talon). But to be rewarded for this they can usually make a team fight instantly 4v5 do to burst damage and if you fed these two they will snow ball the hell out of the game if payed right.
Zed- Zed has fewer risk than Rengar and Talon assassin with the same rewards ( Snowballing out this world) but the con is he takes more mechanics. He can jump in the fight dish out damage then leave looking away from the explosion of spamming the laugh.
Kha'zix- Kha'zix has a harsher time than rengar, zed and talon. He does not have as much burst damage as them and no where near the amount of outplay potential zed has. But he does have the same rewards just with more cons and a higher risk. When kha'zix jumps in he HAS TO GET A KILL or assist fast or he is dead if they focus him.
Short- Talon and Rengar delete other champions instantly if not kept in check. Kha'zix cannot do this anymore Zed- Can go in and if he is in a bad spot ult out or w out while still dishing out damage. Kha'zix cannot do this unless he gets a kill or assist.
In short i think they either just need to change kha'zix identity as a whole from a ad melee assassin in whatever they going for with him at the moment. I just think he needs a small rework to put him in the same place as rengar at the moment. A healthy champion.