Warwick has gained kind of more flexibility in the play style. This can be observed from his early game and teamfights.
For his early game, due to his CC from the E, he could now not only countergank, he could invade, and gank lanes. Moreover, your Q now is like an alpha strike like master yi, if you time it correctly, you will follow people when they use gap closers to escape.
For the teamfights, CC from his E and the change to skillshot for his ultimate has allowed more flexible play style. You can initiate by your ultimate and CC from E to lock down the enemy team. Or if things goes bad, you could use your E to CC the enemy and disengage with your ulimate. Of course you would say your ulimate is harder to hit becoz of it becoming a skill shot, but the flexibility it brings to warwick outweighs the lost of point and click since it could be compensated by your own adjustments.
Overall, the change of warwicks kit is much welcome as it brings in more dynamic in his plays. Giving him a higher skill cap where players need more understanding of his kit rather than just power farming for a safe ultimate.