The ability for weapons to proc on riposte has been removed. This mechanic simply makes it impossible to balance weapon creation. With this removed, we will be allowed to create items with higher proc rates and more interesting proc effects. An example of this was the weapon Spirit Harvest, which is a good weapon in its own right, but turned a high end warrior nearly invincible. In order to balance out the loss of aggro for warriors, every riposte that a warrior performs successfully will now add a flat hate bonus which scales by level.