I have noticed that military technology spreads relatively evenly across the major powers of Europe during the game. As a result, it seems most provinces have the same fort level (within 0.5 or so) across whole realms and even between different realms. In my current game it is 5.5. 90 percent of france has level 5.5 forts for baronies (the keep looking ones). The bishoprics are all 2.5. The towns 2.1. Its the same in England and HRE. Is that really realistic? Were defenses in London really the same as Cornwall? Wouldn't it be more fun if there was variation in the fort levels, and also more historical?