Nunu 'e' change suggestion

I'm referring to his ice blast. Over the past few years, Nunu has been a difficult champion to balance. He's either too strong, or he's too weak. Part of this comes from him being an old champ, and the fact that he has point and click cc with no real counterplay. I think we can all agree that we like the idea of throwing snowballs. That will remain unchanged, but instead of being a targeted ability, it's now a skillshot. Every few seconds, Nunu picks up a snowball. The number of snowballs, damage, recharge rate, etc increases/decreases (the recharge rate) with ability level. At first rank Nunu can have 2 snowballs. He gets one extra snowball every time he levels up the ability. Nunu can also fire multiple snowballs in quick succession, with a small delay in between each throw (maybe like half a second or something). Finally, the ability no longer slows. However, it does apply on hit effects, so he can build something like Rylais or iceborne gauntlet and still get the slow.