So it's just the simplest thing that was going to solve the cases our ops people have. It provides editing of the tabs list in mongo, nothing deeper than that.
-delete num
-insert num type name

The common cases we needed to solve were the deletion and rearrangement of tabs. Delete is just done with a delete, and rearrangement is done by a delete followed by an insert. Currently they have to do an export/hand-edit/import, so this is a real improvement.