Anyway, just thought I'd flag this and get some feedback.
Just in case they end up supporting platforms other than Windows (their
FAQ uses "currently" when discussing the lack of OS X and Linux
support), perhaps it should be "packaging/u3/windows" or
(This anticipates hypothetical future OS X/Linux/etc. support being in
the form of different versions of their firmware for different
platforms, rather than supporting multiple platforms on the *same*
drive; if they do the latter, I don't know how they'd do it, so I don't
know what the right directory layout would be).