When I receive a package from a numista trade, it is easy to tell the country of origin. However, since the numista user ID does not match with the senders name, I have to spend time searching for the appropriate trade on the swap monitor. Sometimes, this takes an inordinate amount of time.
My suggestion is to add the national flag for the sender's country for each trade on the swap monitor. Since this information already exists, it should be easily implemented and valuable upgrade.
Ernie