Speaking about the Caucasian culture, i added it to the saved game, along with the provinces that defected from Austria to other countries. And yes, it works!
Now about Ar-P. I cannot blame him for leaving. Somehow, Mulliman managed to get TONS of cash in a very short time (5000 gold coins!). Of course, with such an amount of gold, he really wanted to trash venice. After France peaced with austria, asking only for Alsace (which was French by right, and was supossed to be given to France by edit). Mulliman (Austria) dowed Venice right away. Venice asked France for help, and guess what? France entered the war, broke the truce and faced a -6 stab hit. Mulliman kept saying "I need help in the continent! French armies are huge!". So, i joined in. Portugal didn't want to enter the war due to England (they feared England would enter as well on the same side as France). I started invading southern france with about 80k men, was about to invade sardinia, and then, i sent a silly alliance invitation to Seen (England). To my great surprise, he accepted! It was now that things got grim for Ar-P. Facing about 100k austrians ready to invade France in the east, facing 80k spaniards in the south, and 40k english man in the north, Ar-P started saying a crapload of things in german (is anyone german here?), and then said "Sorry, such a gang bang and this for the second time is enough", and simply left.
Oh well... I just hope everyone sends me a WP so that i can rebuild france... ONCE AGAIN
P.S. Mulli, why did you EVER want me to dow France? I feel like i was manipulated... France had no "Great army" like you kept stating...