I agree it would be nice however the ask is unsustainable.?

It would no only mean Jason would need to investigate every single app and how they store config / user data and build an interface to allow these to be set individually per application but this could / would break with any changes the developers of these applications published.? Not to mention several apps set / create the default folders on first run which could and probably would overwrite any prestaged settings.? Remember, Jason has to react with an update or patch when developers change libraries etc AFTER they release and it is discovered because the developers do not coordinate with Jason or publish these changes prior to release.? In some cases this is unfortunate as much as we (the BAP Community) do to help others use and configure these apps and the bugs JAson has personally reported and helped them fix because we discovered it the hard way.

On top of the above, how would one track when a user intentionally decided not to use this "default" folder structure and set their own?

Like I said, this would be a great feature but personally, I think the ask is unsustainable long term.? The best way to do this is for users to set this up in the settings of each application and back this folder up religiously :)? I know when y pi is running, I clone the USB I run from to an SD card i have that stays in the PI every night.? I can automatically boot to this SD card if my USB key dies or is removed.

Who knows, Jason may have some magic jelly beans laying around that will pleasantly surprise me

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