Currently there is no easy way to manage the footprint library as you have requested (i.e. rename, delete unwanted parts, etc.). We already decided to update FAB 3000 and include those library management features you requested. The update will be available next week and I'll be sure to contact you when it's ready for download.
Where was this functionality implemented?
Is there a way to host the footprint library on the network so it is shared between licenses?