Frickin' synch
It would also be nice if s/w would notice that a file hadn't actually been changed before determining that it needs to synch it. Outlook has the irritating habit of flagging PST files as modified (in OneDrive's view, anyway), even if all it's done is open them, triggering a 1.5GB synch for each of the (currently) 6 annual files I keep for SWMBO. But I can't just take a static backup as SWMBO might muck around with it.