Post regarding Saturn,

Titan will be a space magic terra-formed world and is the central government of the Saturn region.

Might use Tethys as a terra-formed planet as well.. Other large moons will be possibly up for grabs so long as they fall under the Jovian laws etc. 

(i'm thinking of Saturn being the more law-less of the two worlds but the presence of the Jovian fleet, the worlds proper still abide by basic law.