I have uploaded the request for comment on registration enhancements for Heidelberg Medical School here:
http://med.uni-hd.de/projects/openacs-registration.html
Related thread: https://openacs.org/forums/message-view?message_id=187904
Over the next 5 days we will integrate comments, answers to questions, clarifications, possible additional use cases, etc.
After that we would like some proposals so we can start implementing this as soon as possible.
More details in the document.