This is something I've noticed playing against Fiddlesticks and IMO needs to be changed - his Ult.
I don't mind the damage it does, which is a ton with an AP build, and I remember when they added the blink to it so that people had a harder time running away once they saw him storm in with his ult on (though if you have someone that times it perfectly, man its harsh). What I'd like really the change is the ability for Fiddle to CAST while performing his ult. Change it to a channeling move. Its a bit ridiculous to be able to have a constant damaging AOE ult with the amount of dmg it does, while still being allowed to cast Fear (now you can't escape), Crows, and Life Drain. If I'm stunned from another champs move and forced to stay within the ult, that's fine. But there is just too much control coming from Fiddle with his ult, I feel.
Bash this all you want. Agree or disagree. Just something I'd like to see have changed to making it not feel so OP to me. Nothing else really needs to change on him, just this.