I really love the "Directed Camera", I think it does a good job of never missing any kill, however the problem is that this camera only focuses on one hero at any time, meaning that you often miss part of the action that is happening beyond the centered camera's range.

I would recommend making it so that when two opposing heroes are within a certain range from one another the Directed Camera focuses on both of them (so positioning the camera in the middle of them) thus allowing to better see the action/harass/kill.