I know I am posting lots of these, just adding things as they come to me.
I would like to see the ability to configure whether the privacy settings apply based on the sender of the message, specifically, if a user is in your address book and they send you a message then the privacy settings would not apply.
This may be expandable to include a safe senders or domains list with the possibility of some spam management integration, such as per user management of spam assasin configuration from within the application. This latter element would just be a bonus.