1. Shouldn't all countries be on hierarchy level? e.g if you click in China having coins from all different issuers the latest catalog (China - People's Republic) is the one to show after you click on the country. If this is correct most of the countries that were part of the USSR does not follow this system. Try Uzbekistan
(If You have it) and you will noticed.2. I have recommended in the past to add a cropped image of the country location specially for those non existing ones in the country page for reference e.g Sarawak

3. An last but not least... wouldn't be beneficial to have other issuers even with 0 coins in the map for reference while going through certain regions you can see what you are missing... e.g Mexico Revolutionary

Cheers!