OK a case has been made for more of a "standard game" map. The point made was that most of the games on most of the forums tend more toward 8 to 10 players than trying to use all of the nations of an era at the same time.
So, for that reason, there is now a "Standard" collection, generated daily, which will be 150 provinces. Apparently in the lists before 100 was too few and 200 too many.
http://www.dom3minions.com/RandomMaps/standard/
We will see how that goes for awhile.