It is pretty cool that you can preview Spatial Photos and Videos with just PreviewApplication.push(...), but the issue is, you can disable the editing, but buttons to export content to Files still going to be there.
So if my application uses this to showcase some proprietary or licensed content in my application, I cannot really disable an option of exporting it from my app. And another, more major issue, a lot of developers would not even know that user can save Previewed item, as this Save to Files button is not that easy to find.