Filter newsletter options on profile form

Hey guys, If I enable the profile form I see that I can select which lists a user should be able to subscribe to / manage. However, if I were to check the members list, that option would then be available to everyone who’s managing their subscription – including users which are not members. This would obviously be not ideal and thus I was wondering whether the display of lists could be based on what users are already subscribed to, so that the members list is shown only to those already subscribed to it, but not to anyone else?! This would essentially mean that the plugin should run a check based on the email to which newsletters that email is already subscribed and then only show these fields as options. From a user perspective it’s irritating if one of the newsletters that you know you are subscribed to – in my example the Members Newsletter – is not listed in the overview of all newsletter subscriptions! Kind regards, Philip