It would be great if you could create a viewer for the web so that we could embed sheets into a web page by linking sheets to a URL that returns a .soulver file.
And I believe you could do with Swift using WebAssembly:
I suggest this not as much for my own needs but as a great way to make Soulver more viral and a great way to make people more aware of Soulver via ever embed that they come across.
You could give the branded viewer away for free and charge for the no-label version.
Much like how YouTube took off, Flash came to rule the web (for a time!), and PDFs are ubiquitous these days.