Here's my use case: Some users can control the look, feel and navigation on their part of the site, and need to be able to edit their navbar menu (or two, one at the top and one at the bottom).

In other words I would like to give some users permission to manage their own menus, one or two per user. Has anyone thought about or implemented anything like this?

It would be possible to store the links elsewhere in the database (e.g. as variables, etc.) but it seems like using the menu system would be ideal.