See the post on nbusers in 'URL'. The user finds
the packages view of the project too convoluted.
Here is an excerpt:

"Once this one-time startup hurdle is overcome, I
end up with a packages
tab that has 100+ entries that's difficult to
navigate because of its
length and because of the long package name.

....

I understand that NB4
has some facility to shorten the package name in
the tab, but it's not
on by default (more startup clicks.)  With NB3.6,
my complaint was that
my directory tree was too deeply nested so that
once you expanded to
a leaf-node, going to other parts of the directory
structure was an
exercise in horizontal/vertical scrolling.  NB4.0
hasn't improved on
this much - I now have much shallower package
structure, but the package
names are too wide and, because on our project we
have lots of packages,
I still do alot of scrolling.  Back then, I
suggested that the best
solution to the deeply-nested directory structure
'problem' would be to
allow users to 'collapse' the intermediate
nodes...I think this is
what NB4 allows in the shortening of package
names(?) but it's not
nearly as useful there as it would be on a deeply
nested directory
structure."