Then there's the remaining set, who even if they had the inclination, couldn't do it in a reasonable amount of time. Further, some significant subset of those will not have the inclination.
Really, it's 2013, and we can't re-order icons with the mouse by default? It's approaching 20 years now since the days of complex config files for window managers were seen as a good thing. And at least back then they were primarily declarative - which didn't require programming skill (things like m4-preprocessed config file systems excepted).