Thanks everyone for your vote. When you vote leave a comment below to help us understand this feature:
Which is most important to you?
1. offline sync - like OneNote, your Sways are available in the app while offline
2. Save as file - actually create a local copy of a sway as a file that could be shared via USB if there is no internet
Feel free to share other ideas as well to help us understand why this is important to you.