Fiddlesticks' kit contradicts itself
Main culprit being his fear, ever since fear itself was reworked. Targets now run away from him instead of staying in place, which is directly counterproductive to the nature of his drain ability, which requires him to stay put and channel.
Nevermind getting a full channel off, you're lucky if you can even get half a channel off anymore. And I didn't even talk about the fear duration Nerf yet.
Fiddle jungle brought something to games that not a lot others could: Paranoia. He could be anywhere, waiting to pounce on you with his crow storm. You played differently with a fiddle in the game. I miss that.