Nasus seems balanced.

53.5% winrate in Bronze, first highest playrate. 51.3% winrate in Plat+, sixth highest playrate.

You know what I really love? A case of one single champion above all making a game incredibly boring and unfun to play because you know it's a forced loss if your ADC decides to pick or anyone other than because, like, really, this season didn't already have a plethora of problems that weren't relegated to someone just picking a champion and making the game unfun for everyone like one of CertainlyT's designs.