I see a lot of people requesting addons and such for premium memberships. I was thinking perhaps someone could create an addon something like the one Drupal has here: https://drupal.org/project/role_expire
Instead of roles, this would expire access to user groups. This would be great and would make it very easy to create premium memberships using the Paypal donation addon.
Merged on Jan 08 2014 at 04:30:08: I would be willing to pay someone to do this if anyone is interested in it.
One guy made an addon and is selling it. Now without support, but working. I do not know if he made also English version. http://www.php-fusion.pl/forum/viewthread.php?thread_id=28785&highlight=premium&pid=142923#post_142923