I dont want to change the present simple arrangement. Too many things built around that structure.
However:
With the new program BS026, you can do this yourself, Ian
BS026 allows you to switch to an alternative set of database files, either on your computer, or on Flash, or external drive.
Just use BG to backup your data files to a folder.
Presently, you will have to use BG to change Data source, to point to them each time you start up.
For advanced users, I can provide an option in Preferences to allow you to point to that folder on startup.
BG will then look for those files, rather than the files in Installation folder.
Any other BG users feel strongly about this?