adding this in a KoH would be, 3 Phases,
Phase 1, some countries to choose, so, at phase 1 only the winner, wins a achievement for winning the league. Like Andorra achievement with Bronze frame
Phase 2, new countries, only the winner, get an achievement with silver frame + flag
Phase 3 the same. + Golden frame in the achievement.

In that case aren't needed the 200 countries...