That is true, but I did just that yesterday as an exercise (after all, this is my first NMLPaulC wrote:IMHO it wouldn't be worth doing each region seperatley because each set would be relatively small,…

Mmh, I could do that if I had the proper lists. Back in 1830, when Belgium was created, there were 2300+ municipalities, only 9 provinces, no regions and no language border. It could be nice to have such a version…it would only be worth doing if you had a larger, more comprehensive list of all Belgian towns and villages, and that's not something that I personally have much interest in.
Another set that could be playable is one with the 134 cities of the country ('city' being an official, honorific title for a municipality in Belgium).