yeah, I know what you mean Allen.. I know far too many people who would rather spend all their time working on the way a site looks, giving it a new "better" layout every couple of months, instead of getting the content that needs to be done done.. That's why I left the last site I was working at, the co-webmaster was someone who always worked on the stupid stuff, instead of the content.
Having said that, I'm a perfectionist, and I really like simple designs, so the importance of customisability.. like a form of branding, I want all of my site to have a common feel