Honestly, I don't like Ryze's new build at all. The concept was that you could get 5 stacks and be able to spam a shitton of skills very quickly with q-e-q-w-q. But its got two giant problems. First, the time period on your passive is too short. It could use another second to be useful. Right now, I think its one of the highest skill combo's to pull off 100% correctly in the game but the payoff is very little. Adding another second would let you spam a bit more and make up for his terrible scaling. But the other big problem is how its phrased. his passive takes time off his cooldowns according to the cooldown of Q. But it also gives 30% CDR! But that reduces the cooldown of Q in the firstplace, making it less effective as time goes on. Overall, the 30% CDR will let yoru abilites go off faster since they have a higher cooldown timer and will therefore have a greater impact by the 30%. However, I think they should switch it to a standard second count. 2 or 3 per ability would be best.
Summarized; Ryze sucks right now, but its not his skillshot thats the problem. I think just buffing his scaling is a poor idea too. He was released waaaay too early. H needs more testing.