I agree that a theme needs central control of one Art Director / Agency. One theme needs consistency.
I don't agree that mutliple themes need central control.
I agree that the desktop needs freedom of look. That will be revolutionary in the masses.
I agree that functionality and look need to be in harmony. We need both. We need simplicity and enhancenced control. Simplicity means hiding enhanced control at first sight.
A theme I would define as a set of components for OS, Applications, Launchers, etc. that define the look. Usually a theme has some kind of topic such as milk aqua wind nike microsoft apple mars business engineer glass nasa etc.
Greets, M.
