Custom-designed trees for each class to provide more utility or damage options in a no-GCD environment.
The gameplay feels closer to an ARPG (Action RPG) than a traditional MMO.
The phrase refers to a growing trend of "Funservers" within the World of Warcraft private server community that remove the Global Cooldown (GCD) on the Wrath of the Lich King (WotLK) expansion. By eliminating the standard 1.0 to 1.5-second delay between abilities, these servers transform the tactical, slower-paced combat of the 3.3.5a era into a high-speed, action-oriented experience. The Mechanics of No-GCD Gameplay