I don’t understand why people get tied to “Great name” to me a great name is a hash, generated just before I deploy, guaranteed unique. Impossible to remember, unlikely to be randomly discovered. And when you hit the app by that ID you get a 410 error.
Only the URL with your own .com would be known to the world.
We don’t do this internally because the dashboard shows the AppID not the App Name, and so the humans get sad, when they can’t tell which app is theirs.