Good question. Setting the "Show discussions" list box to "All" slows things down to a crawl.
I have asked Brett if it would be technically possible to add a third level to the board. The European index page, could then be made to look like the forums index, listing the countries and opening to new index pages for each country. Haven't gotten a reply yet and am not sure if it is possible.
A simple interim solution would be for me to list them in the forum charter with live links. Half a day's work for me, but perhaps worth it?