Warwick nerf is unnecessary
As the subject said, it is an unnecessary nerf that lowers the viability of an already unviable champion. Warwick has no mobility to speak of, he cannot wall hop, has no utility outside his AD steroid which most ADC's don't need anyway, and his pre-6 ganking is so poor there is no reason to use him.
His only saving grace is his ultimate, which is relatively low CD; 90 seconds at rank 1; and it functions as both his only form of CC and his only form of gap closing. So now the CD s being increased by 20 seconds at rank 1; 10 seconds at rank 2; and thus further weakening his already poor ganking ability.
I disagree with this change. In terms of early ganking, Warwick is non-existent and so this change doesn't improve early ganking issues, those are the result of champion design not Jungle design. Even in the new jungle, Warwick still isn't going to be competing with the likes of Lee Sin, Kha'Zix, Rengar, Jarvin IV, Vi, and even Rammus. He has no CC outside his ult. No gap closer outside his ult, and there are far better choices if you wished to design a pick comp. I
Like Thresh, whose Q has greater range, a lower cooldown, and a lower mana cost that provides the same hard CC that Warwick's provides WITHOUT being breakable/interrupted.
On top of this, it was stated that Warwick would also be seeing a revamp in the future to address his viability, this change is assumed under the current version of Warwick and makes little sense as there is nothing to compensate for his overall, weak tool kit.
Do reconsider this change, it doesn't promote jungler diversity it only stifles it further.
