Thanks for posting, Attila. This kind of thinking is what we need as we contemplate where to go from 1.1 to the next version (likely 2.0). Adding the BA-standard mailing list to the discussion (you should join that one too if you haven't already).
I'll reply with some recent thinking I've been doing along the same lines when I get a chance in the next day or two.
Nate Otto
Interim Director, Badge Alliance