No, Nocturne isn't a bad champion. During earlygame the ult is mostly for ganking through wards and cutting off enemy vision rather than gapclosing, while lategame it turns into "dive-onto-adc-for-free". The jungle changes ruined him and the warmogs/atmas/frozen mallet nerf also ruined him.
He's still very scary to play against if he snowballs really really hard and gets good items because there's no gold in the jungle anymore.
The great thing about Season 1 Nocturne was that you could just farm jungle and maybe gank or countergank when ult was up, still get lots of gold/items, get tanky AND deal a ton of damage. Now there's no jungle gold or atmogs so you're forced to build all tank items and no damage items so you're basically Vi or J4 with worse utility and worse gapclosing.
Think about how overpowered he would be if his ult's CD was like 60-90 seconds or something. Warding lanes would basically be useless and he would be huge every game. I don't think Nocturne needs reworked as much as jungle gold needs increasing and the "jungle items" being removed from the game.
He's still very scary to play against if he snowballs really really hard and gets good items because there's no gold in the jungle anymore.
The great thing about Season 1 Nocturne was that you could just farm jungle and maybe gank or countergank when ult was up, still get lots of gold/items, get tanky AND deal a ton of damage. Now there's no jungle gold or atmogs so you're forced to build all tank items and no damage items so you're basically Vi or J4 with worse utility and worse gapclosing.
Think about how overpowered he would be if his ult's CD was like 60-90 seconds or something. Warding lanes would basically be useless and he would be huge every game. I don't think Nocturne needs reworked as much as jungle gold needs increasing and the "jungle items" being removed from the game.