Why isn't this functionality in the official app?
Discussion
There is no such thing as an official application. There are clients that connect relays. You can build your client.
Fork isn't quite right for dev Vitor Pamplona's tastes, he's said he would accept the code changes if the Monero community would offer code that's more minimal and just links to an external wallet (in line with how Amethyst already doesn't have a built-in wallet for zaps)