I use OneNote for years. For business and private needs. In no way it is an option to sync my notes with servers outside my business or ouside my private NAS with a webdav server (Synology).
Do you plan to add a feature to fully sync existing OneNote directories with a webdav server or with ownCloud (also NAS aware software)?
Without selfhosted server option, this software can not be used in business environments.
iTunes is not an option here. It is much to complicated and not convienent to use. I want to sync as soon as i'm connected to the network (home or business or vpn). This needs a sync to common driven protocols like webdav.