корявая wiki, советую тебе перечитать раздел MMO-Champion посвященный этой теме.
Keep in mind that lowering the GCD would have a very limited impact on most melee though. The only thing it would do is help to get around cooldown clashing. All melee are governed by cooldowns, or other mechanics outside of the GCD system. Rogues are governed by Energy, DKs by their available runes and RP. Warrior, Shaman and Paladin are all governed by ability cooldowns. Shaman and Paladin do have more clashing than other classes, but the DPS gain would be minimal. DKs would get marginal short term gains for most specs and no gain for specs using UP, which manually sets their GCD to 1 second. Rogues, even during AR don't energy cap, so there would be no purpose even if their GCD wasn't rumored to be 1 second by default.
It does sound harsh, but it really isn't. If you look at possible rotations with shorter GCDs and the effective DPS increase you'll find most classes wouldn't notice a difference. For instance a Warrior would need to have a GCD clash during those 30 seconds, while Warrior rotations only clash about one a minute. DK only clashes between cycles if they have excessive RP. Rogue never clashes. That leaves Shaman clashing from MW procs and Paladin from having too many instant attacks to juggle. However, both of those classes gain a ton from BL as is due to on-hit procs. The haste naturally increases Seal damage and gives Shaman more MW procs and typically better returns from WF. It's hard to feel bad for them.
p.s. haste не влияла на CGD у Melee до патча 2.3.0
да и вообще многие Melee абилки привязаны не только к ГКД но и КД и к набору дополнительных ресурсов(ярость/мана/энергия/сила рун и так далее)
