William Devereux, the frustrating thing about these conversations is that they end up being omnidirectional. It's the same on the feedback hub. We put our ideas forward, most often seemingly into a vacuum. We wonder if we've been truely heard and understood. Sometimes ideas are implemented, sometimes they aren't. Rarely is the decision process transparent.Yet the requests for our help and feedback keep coming. It's no wonder some cynics compare this to the act of training of captive animal, rewarded periodically for good behaviour. It is particularly disappointing that you seemed to have vanished from this conversation.
To gain my continued support Microsoft would need to:
Fix the feedback hub and these outbound announcements by turning them into meaningful dialogues. In addition to holding a two-way conversation for as long as questions are posted, MS needs to install decision processes that are transparent (exposing what product teams are thinking and why), and a process that organises the disparate feedback through grouping same ideas.
The cloud shows promise for some use cases but is not appropriate for others. OneNote needs a local store / backup/ export capability. The Windows file system is not dead, nor are all OneNote users going to install a Sharepoint server just to retain a local copy of their data.
OneNote is a knowledge tool that requires it to not only be a container for an array of data, it also must facilitate organising and finding that data. That said, it is not the only container in use. Therefore processes of finding data need to be integrated meaning search needs access to content in files and database. OneNote data stored in the cloud needs to be found via the same search used to interrogate local stores ashttps://docs.microsoft.com/en-us/windows/configuration/cortana-at-work/cortana-at-work-overview but which the OneNote roadmap seems to have ignored.
Of course, as the resounding chorus of respondents to your post have stated, a UWA is fine provided it takes advantage of the https://docs.microsoft.com/en-us/windows/uwp/get-started/universal-application-platform-guide#extension-sdks-expose-the-unique-capabilities-of-specific-device-types. Unless you are also announcing the death of Windows 10 on PC, then I would strongly suggest to you that the Windows OneNote needs to have all, and I do mean all of the capability of ON2016. Sure, the current version might cover a large range of common use cases, as many of OneNotes competitors do. However, as you know, statistics can be misleading. I suggest that it is the less common OneNote use cases that not only brings your OneNote 2016 user base to the cash register to pay for O365, their satisfaction with the product also leads to their evangelising O365.