Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Customization has always had a high priority on the Linux desktop. That hasn't changed now that the two major desktops have become three -- GNOME, KDE and Ubuntu's Unity. If anything, as much as two-thirds of the complaints are about this trio.
Often, the problem isn't that a tool is missing, but that it's been renamed or repositioned. But the questions remain: Which of the three major Linux desktops offers the most customization tools, and which tools are easiest to use?
To look for an answer, I've compared visual interfaces for the three desktops for personal customization and for general system settings, which can also have an effect on setting up a computer according to your preferences.