I didn't like the change when it first came out. The cone naturally helped "funnel" the enemies into a tight little spot so all the AOEs volleyed at the trash would hit every last one. Now I sort of have to do this dance on the wall-to-wall pulls where I run to the wall, spam AOE until the mobs have gathered close, then run back through them and then they wind up being pretty tight - then stand in the center and spam.

I've learned to live with it. It is what it is.