I think MANY people would be interested in a way to leverage OneDrive storage especially as you get 10TB (or unlimited if you reach the 10TB limit and request more) as part of their Office 365 subscription.
Similarly, I would be happy to use this as an offsite back-up and still keep 2x copies of my files on local server disks, so really the need for fast performance from the offsite back-up is limited.
I understand that I would not be able to use this in a conventional sense like a drive, but maybe there could be that option for "cold" storage - a bit like Amazon Glacier where you don't expect to have great performance for retrieval - its more of a worst case scenario is you lose your entire server (inc. duplication) e.g. in a fire as opposed to losing 1 drive and having to rebuild the lost duplicated files.