The previous iteration of Rengar saw his W providing some utility, as well as a reason to put levels in it.
This one is just... Awkward. You rely on W to gain 100% ferocity, but at the same time you're supposed to save it until after the enemy has hit you with their spells? Uhm... Hello? Is Rengar an assassin or a bruiser now?
On the one hand I agree there's not much point in leveling his W.
On the other hand I think he's really strong right now and I don't think I'd want him buffed.
every champion has an ability that they level once and forget about
for 
it's her W
for 
it's her E
for 
it's also her E
point is Rengar isn't alone on this and it balances champions a lot more, he basically gets a free cleanse which is super useful for ganking, no other incentive is needed for upgrading his W
Rengar is no more special than any other champ. sorry you feel your main is the special one.
The previous iteration of Rengar saw his W providing some utility, as well as a reason to put levels in it.
This one is just... Awkward. You rely on W to gain 100% ferocity, but at the same time you're supposed to save it until after the enemy has hit you with their spells? Uhm... Hello? Is Rengar an assassin or a bruiser now?
I guess both, He had a CDR centric bruiser build even before the rework. (And I f*cking loved that build) And Riot probably had to rely on that side of him more, to allow him to survive the increase in Kill time which they said was their goal.
It also sets them apart from the other assassins in the rework. Considering he doesn't have the same finesse and deception mechanics that the others have.
