Show watch faces on Apple Watch app

Enable a feature where you can create watch faces as complicated as ‘other watch’ but instead of only having a photo to use for the Apple Watch, save them onto the watch and allow us to change between each watch face on the app, effectivly giving us 3rd party watch faces and allowing us to make our own watch faces. All you would have to do is enable the ‘stay on last app’ in settings and we have our own. Please support and get this up and running as I think it would be a great idea