(06-02-2021, 07:33 AM)mcol Wrote: What issues might people be worried about when moving in this direction? What are those issues associated with the Windows registry

Having another centralized config or key-store mechanism is troublesome in a couple of ways. It's similar to the situation that GConf/gsettings/DConf brings where you have to learn a new system that can easily get cluttered. Soon you won't find or know how to get what you're looking for or which settings or configuration is where. That's unless everything starts to rely on that new centralized mechanism. These are normally good for enterprise services though.
However, here I don't think it's so much of an issue other than it being a not-so-new file hierarchy that programs will assume is fixed. As long as their concept of a hierarchy is anchored in reality this is fine, once it diverts then it can create discrepancies.