First I thought that it would be nice to immediately see the country of origin of a poster but now that I think about it what I really would like to see is a marketplace filter so I don't even need them anymore.
![Smile :)](./images/smilies/icon_e_smile.gif)
Ideally something where I can filter by destination (because if something is only shipped to CONUS I don't have to try to buy it) and a source filter because if something is shipped from outside Europe, I probably don't want to buy it.
But maybe I'm overoptimizing. So far the marketplace isn't totally out of control.
In the long run more tags like vintage, nib, customized, keycaps and so on would be great, I suppose. I tried following the marketplace on GH for a while but it was just too much.