Dont know if this has been thought of before or if anyone would be interested. Dont even know if it would be possible, but what about a city/village council you can join (maybe as a guild?) where you can perform political actions, ie dealing with notions/laws regarding crime in your city and deal with people accordingly. Organise defenses in your city to defend against invasions/dragon attacks. Review members of your city and decide what their job is, maybe implement a GDP system? more advanced features could be upgrading your city's buildings, defenses, extending it etc.

Probably not as far as a RTS game such as Anno, civilization series but i think it would give another aspect to skyrim. What do you think?