I voted for the offices and town/guild/kingdom council option. If implementable, something inspired by Europa 1400: the Guild/the Guild 2 would be amazing (!!!), with an office tree overview in the 'reports' tab or similar. One could propose measures and use one's relation, persuasion skill, bribery or favours to garner support. Above all, this could be a way to draw from (but not replicate) some of the options available in the Diplomacy mod, such as persuading a monarch to declare war on another faction, or even to reallocate a fief or indict/impeach a lord.