I don't see the point to Nocturne with the games current standings. Nocturne has been sitting on my shelf for a while, so I wasn't discouraged to lose my jungle from counter junglers for the first few games. After a few more games and getting reacquainted with Nocturnes Q I started to noticed that Nocturne is kind of a joke in my opinion. His ganks are generally poor, his jungle time is very average, and he never becomes a threat on anyone radar. I've found that playing him with this new and improved League of Legends, that nothing seems to synergize with him. You build tanky, you do no damage. You build damage you're far to squishy to even take the ADC on 1v1. AD, AP, Tanky, or Bursty, Nocturne never came together for me like he used to when I played him last.
I figured I would start with the source of most problems which is player error. Normally I don't need to look up guides for characters and how to build them, because it varies from game to game on what you need. So I looked up a few builds and tried them when I could and still no synergy on Nocturne. I was still suffering so my next thought was to watch higher ELO players play nocturne. "Maybe I'm just always in the wrong place." I thought. Unfortunately, I watched jungler after jungler not contribute to a team with Nocturne. I finally witnessed a game where one of these Nocturnes had a positive K/D. He ended up being the cleanup guy. He would wait for the teamfights to end and , with a heavily warded map, he would clean up like a janitor. He would scrounge for kills like a hungry dog under a dinner table. Does this strategy work? Maybe, but this was in a High Elo and his team was more or less forced to 4v5. This can't be all he is good for. I hope not because this was the only successful Nocturne I saw in the 5 or so games I watched.
TL;DR What is the purpose of a Nocturne on a team? Should he not be jungling or should he not be on a team. I think he has a great tool kite, but I feel some things need to change to make him viable at all. Mainly I think he could use some CD reduction on some of his abilities, and the range on his rank I ult is a joke. Anyone that wards can avoid it cosidering it doesn't even reach the bushes in the top or bottom lanes from the tri-bush.