Another installment of: How Darren would use Membership, Roles and Profiles...
I'm not sure whether anybody actually followed my idiotic journey on a whacky architectural path of discovery but, if you did - forget everything that I said. I've done quite a bit of prototyping over the past 2 days playing around with various things and can now see the errors of my ways.
http://weblogs.asp.net/dneimke/archive/2005/01/31/363687.aspx
I guess that ScottGu was right after all! :-)
As an aside... later today I will be uploading 2 new prototypes on the ASP group at ProjectDistributor. They will be on "Connected Web Parts" and also one about the correct way to use the Membership+Profile model in a "ProjectDistributor style of application".