Relocating Fedora's RPM database

Note that everything you listed is stuff which you update when you update files under /usr. Most of it basically is indexes to making looking thing under /usr up faster, so regenerating this together with any changes to /usr and having them in sync with /usr really makes sense.

I'm not really involved in this whole discussion but to me /state feel like a solution which is looking for a problem to solve, rather then the other way around.