I'm on an India game at the moment. Gavelkind's a bitch, and the lack of CB means it took me two hundred years to finally become king. Began on Charlemagne start as a vassal duke in the southern tip of india, became independant king the 15 december 945.
My main source of land was weddings. Lots of weddings. And thousands of gold in claim fabrications. I had to reconquer my second duchy three times because of gavelkind and assassinate a brother or two for the same reason. Then I married my heir to a seven-counties duchess and suddenly I controlled a good half of the kingdom. Still not enough for independance. I got owned when I forgot I joined a faction and it fired. We got our ass handed to us but I got away with a 250 gold fine (gift+ransom) and a slap on the wrist. Then I pressed my 73yo mother's claim on the other guy's duchy. That'll teach him to fire factions too early.
The final move was marrying my two sons to the second and third daughters of the king of ceylon. Their only son died in infancy long ago, and the first daughter died of illness (lucky me). I killed the second so the third, married to my heir (ultimogeniture), would get the throne.
She did, but she gave me two sons. And I forgot to take in account that, while I was in ultimogeniture, the kingdom I coveted wasn't. So my firstborn got the throne, but I ended up as my second son, who got the other seven duchies. In frustration, I declared war for independance. Almost won but died in the middle of it of "natural causes". Shiva damnit. So war ends inconclusively, I wait ten years for the regency to end, and I see that I have a claim on the kingdom of ceylon, that I could've pressed long ago. War was quick, finally I am king (it was long overdue too, I was hitting vassal limit, and because of shitty heirs I couldn't decentralize lest I got over the demesne limit.). And independant.
My former liege was pissed. Think about it, I got away with two of his kingdom titles, seven duchies, and twenty-six counties. You too would be pissed if half your realm seceded.
A few years later he DoWed me. Press all claims. I won, but if I didn't it was almost game over for me. Also I married my heir to a six-counties duchess in his realm. Which ended up in my realm.
I married my heir to the princess of pratihara but she died. I married the second but she died as well. Oh well. If the king had the decency to die earlier I could've pressed her claim to the two kingdom he held and would've been inherited by the two underage sons under gavelkind. And become emperor, hopefully.
As it stands, it's back to claim fabrication. And fighting ginormous wars over single counties.
No wonder india never changes if the player doesn't touch it.
I like my yellow color though.