Address Book Maintenance/housekeeping

Hi... I wonder if the Seamonkey Developers might like to add a pass 
worded access to an internal facility that allows better email address 
book housekeeping and maintenance?
Deleting and filing accumulated of outdated email addresses would be a 
useful addition especially if it can be done from a radio style button 
in the address book. Ideally, it would be offering passworded access 
(for security reasons) to the deletion facility and also require the 
user to check to see if they actually want to delete the email address 
first before completing the instruction. A further improvement might 
allow to build the address book into a library of different 
classifications for, say, my workplace, my home, my hobby, my family etc 
and allow bulk selective tagging for deletions and as well as 
backup/filing/restore of the address book to another file or hard drive 
or transportable USB pen drive storage location.
Kind regards,
Robert... ZL2ROB.