As for the first one, there is no connections between "country" and "address book".
The country and zone field in My Store will be show on the print page of an Order or Invoice, that can be generally configured as the actual geographic position of an online store. The address book refers to the addresses the products in a customer's order has been delivered to.
As for the second one, we will fix it as soon as possible.
As for the third one, we will consider your suggestion and try to realize this function in the future.
