However, I'm also a bit worried about the "books from different country" rule. For example, I currently have on my shelf candidate books from Japan, Norway and Sweden, but you've already got those countries covered on the list. Would this mean that I could put in a Japan book only if I took out the other Japan book? (I've already read the Norway and Sweden books on your list, so that would be my own choice based on the current list.)
I can totally understand that you don't want the box to evolve to a point where only a few countries are represented, but would you perhaps consider a rule like "at most two books from one country"? It would make it a bit easier to find candidates. :)
Either way, I'm in. If you'd rather keep it to one book per country, then I'd appreciate being closer to the end of the list. It'll give me time to hunt down and read some other candidate books. Thanks.