I would like to suggest an option on voicemail for each extension where instead of having its own voicemail, the extension could access and use the voicemail on another extension.
I have 5 extensions for one office of a large company that would love this feature. They do not like voicemail groups because they all have to delete every voicemail and would rather have one box they they could manage together. It would also be nice if the message light could be linked to this master mail box.
I would suggest under voicemail menus for each extension, it gives a choice for linking to another extension with another menu that allows a selection of which mailbox to link to.