What if the different DF civilizations had different forms of government? It would make sense, because in real life different countries have different governments. There are several forms of government commonly seen in real life civilization:
Autocracy:The most basic form of government, where a single person has control over the entire population. In DF this would be represented by having a single royal noble for the entire civilization.
Monarchy:A form of government where a single royal family rules the entire civilization. In DF, a monarch, a consort, and their children would be the only royal nobles in the civilization.
Feudalism:A form of government where people work for a noble that in return gives them protection, and who himself works for a higher up noble. The current version of Dwarf Fortress already models this pretty accurately, with barons being under counts, counts being under dukes, and dukes being under the high monarchy.
Oligarchy:Also know as Aristocracy, Oligarchy is a form of government where a few rich people make the decisions for the country. This would be modeled in DF by having the richest of the population in a civilization (Up to one 100th) as aristocrats. Every once in a while, these aristocrats will attend assemblies to decide what happens in a civilization.
Democracy:A form of government where the people rule. This would be simulated in DF by having no nobles, but instead having the population attend an assembly to decide on a law.
Republic:A form of government where people vote for an official to represent them. Basically, an indirect democracy. In DF, this would be modeled by having a single noble for each town that takes the votes of the citizens, and whatever is the majority the noble represents for the town. This would probably be prefered by most sizable civilizations in DF, as a democracy would probably require everyone in the civilizations to stop work and go to attend the assembly. Smaller civs with 2 or 3 towns close together would probably prefer democracy, though.
Anarchy: A lack of government; basically, it's every man for themselves. Civilizations with anarchy will have everyone fighting over power, with no laws or nobles to control them. In DF, this would usually occur when a civilization is changing government (fairly rare). It would be extremely rare for any civilization with decent ethics to have anarchy in any normal circumstance.
So what forms of governments would each sentient species in DF prefer? Here are my suggestions:
Humans:Very probably feudalism or monarchy, as it was back in real life medieval times.
Dwarves:Possibly biased towards democracy. (We all know how much dwarves hate nobles.)
Elves:Completely balanced chance.
Kobolds:Usually autocracy, sometimes anarchy.
Goblins:Probably the only species to favor anarchy. May also choose autocracy.
Animal People:Almost always autocracy.
(Remember that you are just an omnipotent overseer of the fortress's development, who will help the dwarves to follow the government's requests.)
Well, that's my suggestion on government. If you have any other form of government to suggest, feel free to post it here.