Comment 3 for bug 420583

Use case: Ubuntu derivative/rebranding diversity.

Derivatives might have different interest in notifications; ie some kind of kiosk distro could intentionally favor full screen, urgency=normal, as a default behavior while a multimedia desktop may want something like elementary's wingpanel-indicator-notifications-bzr (status notifier notification log) and no bubbles.

An adoptable notify-osd would win brownie points for Ayatana Design.

A lot of non-Unity derivatives have already opted for their own ad-hoc notification method.