Undo/Rollback feature
 

I hope that the "undo" feature gets implemented. For example the admin picks a usergroup (or more than one) and assigns what actions the "undo" feature can be ticked for. For example.

*undo topic lock
*undo topic deletion
*undo administrative action (such as deleting a forum or category)
*undo mass topic deletion
*undo ban
etc. :D