My personal wishlist item is being able to pay at a restaurant with my phone, without ever asking the waiter for the tab.
Right now this requires multiple legs:
1. Ask waiter for check (first trip)
2. they go print it out and come back with it (second trip)
3. I hand over my CC, and they take it to the register (third trip)
4. They return with my credit card, and now I can finally leave the restaurant.
This is annoying for everyone.
The waiter has to do multiple trips to just handle the transaction without providing any meaningful value (as opposed to recommendation entres, for example).
For me it's annoying because I want to leave, but I am essentially trapped until the whole dance completes.A beefed up Apple Pay would be so cool for this scenario.