The melee attack "cone" in front of your character is way too narrow, as OP said. Even slightly facing to the side and you can't attack.. Wouldn't hurt if the cone was around a 90 degree slice in front of you, instead of closer to the 30 degree area it is right now.

I'd love to keep Auto-Face on, if it didn't cause you to stop dead in your tracks when running and attacking moving targets whenever you use an ability, you have to mash your movement keys at the same time to make up for the stuttering stops between attacks.. only to keep getting the error message "need to face target", very annoying stuff.