Predefined page styles allow for a quick delivery of aesthetically pleasing pages.
Intuitive architecture shortens the learning curve.
Imagine you've just set up your department's whiz-bang site, and you know it's going to knock the socks off members of the other departments in the organization. You've turned all the other department heads green with envy. Unfortunately, this sort of thing often sets off a whirlwind of activity. Not only will the other departments probably try to establish their own presence on the intranet, but this is typically done at a competitive and feverish pitch. Now don't get me wrong, a little internal rivalry is good.