Do people still think that Evelynn needs buffs?
She almost never runs out of mana, she can stay stealthed as long as she wants (at least other stealth champions have limits to their stealth), she can remove slows, and she has an AOE slow. In case her stealth wasn't enough to help her escape, she has a second get out of jail free card. No, if anything she needs more nerfs. You should stop begging for buffs and consider yourselves lucky Riot hasn't touched her.