We can already do this (on desktops/servers)
We can already do this (and I do) with versioned auto-backup. If anything happens I can roll back to 2:30 PM yesterday (or 1:49, or whenever) with a safe boot or boot disk. Of course if BB can actually make an all devices suite that's reliable, has almost no impact on running systems, and reliably easily restores - sure, why not?
Odds are it'll be bloaty, fragile, overpriced Enterprisey crap, but I'm open to looking.