Currently only Google Drive and Dropbox are supported for daily backups with Dynalist Pro. Support for OneDrive would be nice as one of the other major cloud storage providers, which also ties in with Office 365. I moved all my files off Dropbox to OneDrive years ago, with Dynalist the only app left due to the lack of OneDrive support.
I’m not sure if there’s any difference from a development perspective, but this would ideally include support for personal OneDrive accounts and corporate OneDrive accounts (aka. OneDrive for Business, part of Office 365).