I think those kiosks with the big touch screen and the mobile apps work pretty well already, I always rather use them and see a picture what I can order instead of talking to the person.
To be fair, you’ll be disappointed either way. At least with the menu, they can feel like they’re selling decent food (their pictures do look decent) and you can make sure your order is correct.
Well, if you push the same fake picture you did last time, you should get a similar, disappointing result. If you get a different, disappointing result, you know your order is wrong.