Ornn and his CC

Ornn is a really new champ that I would consider relatively broken upon release. He might be mana hungry in the early game, but late game he will dominate any team fight with his many area of effect crowd control as well as aide his allies with better items to scale in to late game. My problem with him in his current state is the cool down on his abilities. Every 9-7 seconds he can slow you max 60% with his q, every 12-8 seconds he can gain a shield (12% max health) and proc his passive Brittle and knock back opponents, every 16-12 seconds he can knock you up with his wide range knock-up (all without cool down reduction which is easy to build on him when going tank). His ultimate can both slow and knock up multiple opponents in a massive range with decent damage while also applying his passive. My ideas to better balance would be to decrease the rate his cool down increases by level. I understand that he is brand new, but it seems like a bit too much aoe cc in a tank. Any advice to beat him other then "get good" would be helpful.