Interestingly enough, the only thing that's missing from this design from the modern Windows Registry is the generation and usage of user principals. The regist

Interestingly enough, the only thing that's missing from this design from the modern Windows Registry is the generation and usage of user principals. The registry already supports a rich, granular permission system, and enforced sandboxing for access. In a greenfield design, yeah, I could see your design being quite useful, but adapting and enforcing a usage pattern on current day Windows isn't that far off.