I have a very similar use case and CD is fairly resilient, but it's a two-part problem, since failing to shut down properly in the first place is a major issues, particularly if you have very large datasets. In my own case, I need to re-upload 500 gigs or so a couple of times a week due to 'improper' shutdowns. Anyway, I will start a thread on that, separately.
I would love to see this a per-drive option to start drives unmounted. This would save all kind of of VPN madness.