Finally, I have to say I disagree with your contention that each SO/ACs would need to become an unincorporated association ("UA") rather than merely create one. Admittedly, the issue of how each SO/AC can control its "alter ego" has not been fully fleshed out. However, I believe this was discussed at some length on the legal sub team call and it seems that between the bylaws of the UA and the charter of the SO/AC there should be very tight control by the SO/AC over any actions of the UA.