...
11/11/2010 update: Discussed this more on list, and at Internet2 Member Meeting. I am most of the way done coding #1. I hope to have some screens (self register/edit, and intvite invite screen) of Grouper 2.0 on the demo server in a couple of weeks. For #2 I know how I can do it with the grouper client and WS and assuming Grouper to Grouper communication. The right (and long term) way is to use SPML or the standard Groups API, but we might have a short term solution for 2.0 if there is time...
...