Identify countries I have/don't have in swap lists

I know a lot of people using Numista try to get coins from as many countries or issuers as possible, myself included. It would be great if the swap lists indicated if the coins a swap partner has on offer are from countries I either already have represented in my collection or are yet to be represented. Maybe some sort of graphic (e.g., a checkmark indicating "I have this country" and an "X" if I don't) next to the country name.

Similar things were proposed some time ago: https://en.numista.com/forum/topic56915.html

Cita: "numinis"​Similar things were proposed some time ago: https://en.numista.com/forum/topic56915.html

​I tried searching the forum, but couldn't find anything. Thanks for the link! Maybe we can spark some new interest for this type of feature.