My idea is to create a "King / Clan Dominium" / "Kingdom / Clan Castle" (that works like a dominium and you can go in and administrate the interior) this can cover an area and can be upgradeable, on the King Dominium / King Throne you can administrate the permitions, and set a Law System & Exclusive Structures (The Common dominiums continue with their normal radius)
Law System: On your radius, all laws are applied, this system can make a handshake with the Karma / Alignment system if it can be applied to the game. one rule there can be is this:
a no-agression rule: if somebody hit people, dealing 25+ damage (on the clan radius) he will be marked as agressor, and other people can kill him without a penalty, they'll obtain honor/ karma.
Exclusive Structure System: You can build exclusive kingdom structures that provides benefits like:
Fertilized Ground that double the grain obtention and reduces the time of growth.
Training Dummies where you can level up your skills without a risk (but a bit slower)
Church: place where you can pray to god recieving temporary buffs (depending on your honor / karma, cof cof Buff System)
Jail: Where you can put dishonored people on your clan, a temporizer depending of their karma / dishonor, not more, not less.
Buff System: with a Church on your Clan / kingdom dominium, you can go in and pray to god on the altar, recieving buffs like more stamina, better defense, better parry / block %, more absorption, damage, crit chance, etc (maybe 2-3 at time?)
That's all i think, it's very hard to me write all this text on english, i hope you can understand me.