The world exploded into a whirling network of kinships, where everything pointed to everything else, everything explained everything else.
— Umberto Eco, Foucault’s Pendulum
I play this record often at work.
Unless you know exactly what you’re doing (which is unlikely), stay static.
And from the comments in Hacker News:
On the very top of the list of abhorrently convolute CMSes would probably have to be Typo3, followed after some distance by Drupal. But the more you work with the initially-liberal Wordpress the more you discover it’s not that far behind either.