Pyke changes nerf his supporting power without addressing the issue of him in solo lanes.
His passive of healing is being moved to his W, which is certainly a nerf...
A nerf to his supporting.
Pyke now won't be able to regenerate pre level 3 without sacrificing some utility. The level 2 critical phase is essential for botlane, and Pyke just lost a lot of power down there because of this change.
In addition to that, what Riot did was instead of addressing his roaming potential through W, they buffed his W's movement speed in later levels as compensation for the reduced healing in early levels and the reduced stab damage. Sure, buffing his hook damage while nerfing his stab damage seems like a good choice, but it really isn't practical when all Pyke needs to do now is to throw hooks to harass instead of going in and stabbing before roaming. This is Talon 2.0 but with utility.
Pyke might be harassed at level 1 by some ranged midlaners, but so are several other champions, and this doesn't address Pyke top as well as it should, as harass isn't exactly rampant there either. I look forward to seeing Pyke start long sword and 3 health pots or refillable potion a LOT more.
His W getting a buff only means that instead of focusing more on killing while roaming, Pyke might shift to hooking and stunning while roaming, while still having the same level of power in his ultimate. Tiamat into Black Cleaver anyone?