Not only has the global cooldown diminished game play by making it mind numbingly slow... Speaking for the enchantress class (I have a lvl 56 int mage) and all of us that worked very hard or spent alot of money on aquiring the full mega mage set which gave us a mana regen rate around 44 that was very useful. I'm no pro, by any means nor do I make elaborate tests but I switched my armor set so I had a 17 mana regen rate and ran plenty of maps spamming all skills as fast as the new global will allow. Even with a mana regen rate of only 17 (down from my mm set of 44) I still had no mana drop when spamming skills. This has taken away most of the benefit of having the mm set. Please figure out another way to make the game more challenging... The global cooldown quite simply makes it annoyingly slow and boring. You're taking away the action!