Here´s the place to discuss all those to be addressed issues regarding the future development of the IMPROVED GRAND CAMPAIGN, which have no thread of their own. 
Hartmann
Hartmann
I disagree on Turkey, though. I extensively tested this setting because I was worried about Persia, and (after MANY testrounds) I have to state:
- Turkey almost always makes it´s breakthrough in the middle east
- Turkey gains on the Balkans in about 50% of the games
In my last game they actually became a big unstoppable moloch subjugating even the province of Silesia, where there northern border ended.
Hartmann
I am not aware if the game has this feature or not, but fortresses actually became easier to overcome during this period because of advances in artillery. This was suddenly slowed in a dramatic fashion with the advent of the Vauban fortress architecture. Is such a feature present in the game? If not, it would seem easy to include, perhaps even by editing some of the text files.