A safe place in the app to store uploads of passports, visa, IDs and other important documents.

A place where you can quickly get information about embassies and/or other diplomatic buildings, hospitals etc, should you experience an emergency whilst being abroad.

not too sure on technicals. but someone might not have data in a country, maybe you can use gps so that you can find each other

Export items — with dates, on your Pinboard — to your Google/Apple/Microsoft calendar to make it easier to receive reminders of flights etc.

Upload a photo to the cover of each Pinboard to make it more visually pleasing. Such as a famous landmark/Pinterest photo from that location.

Order pinboards how you would like them to be in not in order of created. Makes it easier to plan an extended trip covering multiple countries.

Order items how you want. Makes it easier to plan a clear itinerary and work through items methodically.

For long trips around several countries, separate pinboards within a pinboard. Eg 'SE Asia Pinboard' and within it are the Thailand, Laos, Vietnam and Cambodia pinboards you have created. Or a 'Thailand Pinboard' with a 'Bangkok pinboard' and 'Chia

To see what others put down done for a location you want to go too, rather than just suggested ones.

Integrate with Tripadvisor to receive their reviews on places which are more reliable than Google.