The Vagrant website and the docs website is being completely re-designed by the same designer. It is going to look _very_ attractive. :)
As much as it's entirely irrelevant to Vagrant-as-a-tool itself, I'd love to see a whole 'brand identity' in the same theme. It's a small thing, but it makes me slightly happier when the tools I use have a little bit of character to them. (See also: Github & Octocats)