Have you considered Edgeryders LBG?
@chrono: Edgeryders-the-community has spawned a tiny social enterprise called Edgeryders LBG. I am one of the founders. One of the things we aim to do is to provide a corporation-looking interface to people in the community who are just starting with their projects (design principles and more info). We, too, recognized that “no government and no insurance company is able to work with someone without a fixed address” and thought we could create a shared interface for everyone to use. We do have an address, a VAT number, an accountant and all the rest of it.
Whether we in practice can stand in for Apollo-NG depends on a number of things, but we are definitely willing to discuss it. I know it does not solve all your problems, even if it works, but it could be a start.