Instead of emails let users receive their interest profiles as RSS (similar to Google Alerts).
There are two main advantages for switching to RSS:
1. Currently users removed from the ACL still get mails according to their interest profiles. The links won't work but the topic still shows them what ...
People outside of the organization who use this template want to be notified, too!
Being able to edit interest profiles via the web isn't "next generation" but it's important to have this feature for greater use/adoption.