By stepping down, do you mean that it will still be sharpened somewhat but not as much or that you're dropping the edge enhancement completely. And will you be able to totally undo the EE or be forced to add a softening filter to compensate for it? The bottom line is if a video source can't be improved any further with the available equipment without adding some serious flaws, it's better just to leave it alone and hope it can be improved eventually at a later time, either with a better source or better video f/x technology.