Quote Originally Posted by Khalithar View Post
In WoW, they allowed certain third party addons to modify your UI and change how certain things worked.

One of those third party tools was called healbot, for example it let you cast spells by moving your mouse over them, let you map certain spells to left or right click in combat, and gave more info than the base UI provided.
Oh thank you, I was aware of the huge modding part of Wow, but healbot didn't ring a bell and I was far from thinking mods would go that far on a MMO.