Imagine I would like to reorganise my shortcuts. Now sadly I don't know anymore what happens if pressing F8. Wouldn't it be easy if I now could simply enter "f8" in a little second searchbox right to the normal searchbox (in the shortcut list), just like I can do below if assigning a key?
Currently I have to select a random shortcut first, and try to change it to F8 and then see if it conflicts, but still not having the selected conflicting entry. This IMHO prevents to improve your shortcuts' organization, you'll better leave it untouched, once you get used to.