Here is a related suggestion, though not the same, very detailed, albiet old (2008) Also:
http://www.bay12forums.com/smf/index.php?topic=62971.msg1449188#msg1449188It has always bothered me how little the Mountain Home has influenced your Fort. The text on the embarkation screen makes it seem as if your dwarves are very similar to what we hummies might call
Settlers going to found a
Colony. Maybe dwarves are very different from us, but normally the mountain home or
Mother Country is looking to establish a profit from the colony.
Colonialism throughout the hummie times has had varying faces. The colonialism we see in DF is like the colonialism in Antiquity. The colonies were self-governing and soverign. Later on, empires arose that taxed their colonies. After a several hundred year hiatus involving almost no growth in globalization, greater global naval empires arose to make great profits off of previously isolated lands. But even though Imperialistic theory hadn't been thought up by hummies until the early Modern era, why shouldn't greedy dwarves assume exploitative relationships with their colonies far eariler?
Basically, in game terms, if enabeled outside "Powers that be" will request or demand that certain items be crafted or extracted, and will impose trading restictions with other races/ other dwarven caravans. Unfortuantely these mandates may become non-aligned with your own goals and you may wish to win your independance. Maybe you can do this through armed conflict, through economic warfare, or through bribery. In return however, the Mountain Home will provide high quality manufactured items and more importantly
highly skilled immigrants made to order. This may even include a standing army, equiped and fed via supply lines running from the Mountain Home. This is a stretch right here, but maybe dwarves can go to the mountainhome to attend "University" where they are trained by Legendary craftsmen.
Like I said though, much of this is a stretch and wouldn't really work. Truly I would just like to see some kind of relationship between the colony and Mother Country.