A better option would be to have the path start/end styles present as a visual dropdown rather than being accessed only by repeated clicking the arrows.
I frequently find that when I apply arrowheads they are at the opposite end to where I expected them to be. I can't find a 'reverse path' option so a simple button to flip which end of the path the arrowhead is applied would be useful.
Currently the user has to click as many as 28 times to perform this simple action. If I have style #14 selected for the End of the path and #0 selected for the Start and this results in the arrowhead at the wrong end to flip this style I have to click back to #0 (no text field entry or dropdown which would be WAY better) then click to #14 at the other end.
Illustrator's arrowheads have been stuck in beta for years. I doubt they will ever be what anyone* calls "done".
* Except, of course, Adobe. They think something is "done" if they can add it as a feature on the box.