Really love the dual pin feature.
On top of this I would like to see a feature which makes it is possible to change your apple pay card to another account more easily, assuming people have more paying accounts, I think this is a very nice to have.
E.g. On iOS in the 3D touch, if possible and not limited by 3D touch possibilities, change the balance overview to a scrollable overview of your accounts where you can simple click on one of your accounts to link to your apple pay card.