I find that some simple improvements have made the AI a lot more enjoyable to play against already in the last beta :
- No more wandering small armies of minors : the fact that Wurtembergians, Badans and co stay home and don't travel abroad unless in an expeditionnary force is a big plus : it makes the game more lisible and is more realistic.
- Less wandering cavs and batteries : there are still some unfortunately, but less russian or spanish batteries traveling around is a good thing.
But there are still things that could be done through coding or scripting :
- Encourage the AI to keep its forces a lot more concentrated : I still find that the AI Disperses its forces too much. The Austrians or Russians or Prussians should really try to have their stacks of doom as concentrated as possible.
- Have scripts with odds to pick which avenue of advance the AI Will pick to attack a player once at war : ie make the Prussians chose 50% the historical route through Thuringe, 25% attack Hannover with an army, 25% go directly for the middle Rhine and Köln, etc...
I don't know what your ideas are but things could still be done to make the AI if not dangerous at list more rational and logical.