Do you find that your decision to use WebKit is getting in your way here?
As it happens, my company is also working on a browser for a niche userbase (not competing with you!), and I decided to go with Electron rather than Microsoft's WebView2 because it seemed to me that that option would give us more flexibility to deeply customize both the chrome and the content. Our target user base is mostly on Windows, not Mac, so Apple WebKit wasn't on the table for us.
