When they nerf him so he at least stops one shotting 4k+ HP full armor tanks, then maybe he'll come off the perma ban list.
maybe.
The point is Late game Rengar was unstoppable, he had no counter play and honestly these nerfs really aren't much of a nerf and nothing about him will change. He's still going to insta kill anyone on your team, his AD scaling is still one of the highest, making him one of the most powerful champs this game has to offer and once he decided to gank your lane or gank your ADC with his ult in late game then thats it, the team fights over, your match is over and he wins.
What these nerfs do is ton down his utility, this honestly wont fix him, they need to tone down his Power, plain and simple, people pick Rengar for his late game unstoppable power, and until thats addressed he will forever be a perma ban.