[Improvement Request] Prettier Shutdown

Currently, notify-osd instances and open windows get mangled on Log Out/Shutdown/Restart. Also, the user isn't prompted to save and close programs when this happens. Speaking as an OED selling machines which run 14.04 LTS, it would be much nicer to have any notify-osd messages disappear/fade out and for users to be prompted by their open programs before seeing them close.

Perhaps something of this nature could be run before Unity exits:

start-stop-daemon --stop --name notify-osd
WIN_IDs=$(wmctrl -l | awk '!/unity/ && !/Desktop/ && !/Hud/ && !/XdndCollectionWindowImp/ {print $1}')
for i in $WIN_IDs; do
 wmctrl -ic "$i"
done
while [ -n "$WIN_IDs" ]; do
 sleep 0.1
WIN_IDs=$(wmctrl -l | awk '!/unity/ && !/Desktop/ && !/Hud/ && !/XdndCollectionWindowImp/ {print $1}')
done

A desirable additional feature would be for the desktop to exit in a nice fade out (or other) effect.

I'm not a developer and I lack the skills to implement this, despite my efforts to make a hack/workaround, so would anyone be interested in implementing something like this?