I thought it would be nice to have a feature allowing you to duplicate a panel. i.e. Every change made to duplicate panels will show between them all. The primary use-case I am wanting this for is in multi-monitor setups, where you want your panel to be identical across all screens. This would allow you to have the same pinned items on the dock task manager of both screens (for example) without needing to add them twice.
*** This bug has been marked as a duplicate of bug 446654 ***