I wouldnt say that at all. Your acting like a boss, raising his hammer for 3 seconds, flashing like a strobe light is a better way to communicate something is about to happen. In GW2, your enemy telegraphs when you need to move, in WoW, text telegraphs when you need to move. In both games, your looking right at the enemy your fighting, the only difference is the method of telegraphing. I dont see why thats so hard for you to grasp. Deadly Boss Mods has been dead for a long time..... If you actually played WoW, you would know that.
Sorry random Blizzard hater #3487592346, your just plain wrong. Both games telegraph when an action is required. Period. Its only a matter of time before people start learning the animations, just like they did with the text warnings in WoW.