This saves on the download size of an app, but doesn't significantly reduce the resource usage or non-nativeness of the resulting app. Another pro is that as no

This saves on the download size of an app, but doesn't significantly reduce the resource usage or non-nativeness of the resulting app. Another pro is that as noted 'system things' are done in rust, but I'm not sure that's a big bonus since your frontend likely has significant bits of js _anyway_. You've effectively increased the language count in your app.