I'm curious how would you expect it works? Just creating a JEX archive every x days, and overwrite the previous one? The way I see, the only backup that makes sense is a versioned one (like what Time Machine is doing), but that's the work of a specialised backup tool. But perhaps you have something else in mind.
Auto-backup could indeed makes sense but I'm wondering the right way to do it (or if it even makes sense to do it).
