Pyke gets nothing at all from leveling up his W.
Seriously, every rank you put in it only decreases the cooldown by 0.5 seconds, and it's not like he uses the ability on cooldown.
I think it would be a good way to nerf him, change the cooldown from 12/11.5/11/10.5/10 to 14/13/12/11/10 and change the movement speed from 40% at all ranks to 30/35/40/45/50%. This way his roaming potential is cut quite a decent amount in the early game, but he'll still feel rewarded if he puts ranks into the ability.
Thoughts?