Comment 0 for bug 18550

Missing icons should have a sensible replacement, not just the window icon. The
standard install looks great, but once you install more applications the menu
can get messy/ugly. We should try to minimise this effect by better choices of
default icons. Even if we don't have a unique icon for each application, could
we at lest have some more variety based on the type of program? Can we give all
K-apps a KDE icon? We might be Gnome-focused, but let's handle the user's choice
to include other things gracefully.

The text above comes straight from the spec on the wiki, but I have a suggestion
for this: let each folder specify a default icon. So programs in the office
folder for example, which don't have an icon, get a nicely designed office icon.