Ok, I reworked my proposal and improved it based on recent feedback, you can find it here:
https://vhios.dyndns.org/drepoDraft.pdf
I haven't found the time yet to make it a wiki page, so I just uploaded it on my home server.
I removed most of the sections not applying to the topic discussed here, for the few things that remained (implementation details) please consider opening a separate thread if you want to discuss those.
Best regards,
Robert