I can't believe people are actually upset by this change. No matter how you look at it, a circle AoE covers more area than a cone does. Especially when you consider that enemies can not 'stack' on top of each other in this game. This means no matter what, when you get a lot of enemies together, they are going to naturally pile up around you in a CIRCLE. By making this change, this means you have to MOVE LESS to continue your AoE combo. Meaning that the DPS on your team is not getting screwed over by you backing up constantly to hit enemies with your cone.