Earlier quoted context omitted.
> the emotional experience trumps the direct navigability of the site itself Users don't come to a website for an emotional experience, they come to use the tool to do something. Emotional experience never trumps usability, ever. The only emotional experience sites with bad usability have is user anger at not being able to figure out how the damn thing works.
The usability of what? Not a glib question -- if your goal is to give the user a feeling which results in them clicking a signup button or going through another flow you've got laid out, why would you want to muddy that up with a nav bar? For a lot of sites, "Get started" is the #1 thing you want people to do from the homepage. We've known forever that removing distractions from register/checkout/PPC pages increases…
Typically people are looking for information when the visit a brand new site. If the user can't figure out how to get that information, chances are they're going to be frustrated, and have no interest in clicking the button.