Actually even as a commoner I hired mister Jarl few times (although as a commoner I shouldn't, since he has a higher rank).
So I think that your ideas (although very good) would be possible when our civ society will raise in numbers and the ranks will differ more. Then it would be more possible to fulfill all of planned relations within civilian society.
Here we come to the fact, that unless civilians will be played mostly as alts, this part of BoC will expand slower, than military. And the dependency is simple - low count of citizens = low number of tasks caused by low diversity of players.
On the other hand, since we have some decent crafters between civilians, wouldn't that be good to move all supplying / crafting / repairing to civilians? I know, few tasks of that type were done, but still i'm pretty sure that people which main chars are military and has crafting alts make necessary supplies themselves (which in means of UO is natural) but RP of the guild suffers that way.
Also I think someone should move this topic --> OOC board
Ahh, BTW - the name is Riyadh