Hmm. I think it's a good size for a game with 15 players, especially with a victory condition like controlling 4 or 5 other player capitals. That usually prevents the game from going much past turn 70 or 80.
However, perhaps, I will make another version with the same map, but redo all of the province boundaries to drastically reduce the number of provinces. (That's the good thing about layers in GIMP.
) Maybe get it down to 150 -200 provinces.
Pasha