Agree. But many people might not be able to analyse the sequence / cause(s) of certain facets. A really harsh or very long and lazier feeling cycle is, obviously, easier to highlight for many.
The things that are more obviously apparent (and desirable to most of us) are a smooth cocking cycle with no grating / harsh sounds and a twang free firing cycle, to my mind.....Although a cynic might argue that these can be achieved by over-generous helpings of grease as opposed to what might be considered "tuning".
Warning.....many a previously happy gun has been wrecked / spoiled by amateur "tuning".