I'd just like to add my two cents on the Confucianism/Daoism issue. Primarily we have a problem here because the two "religions" (their status as such is debated) don't fit neatly into exclusive categories. While Daoism and Confucianism arise from a similar background (the cultural heritage for pre-Warring States China such as the ideas behind the sage kings of the Shang and Zhou) they can be said to have some distinctive elements. Enough so to draw some distinctions. However as early as before the the Han Dynasty ideas arise such as the 5 phases-Yin/Yang School which are heavily influential in both movements. If you think Confucianists were just hard headed rational humanists, think again, they were extremely interested in divination during the Han Dynasty. Cross-influences can be seen too in movements such as Neo-Daoism in the Wei-Chin period (220-420 CE) (after the fall of the Han) in fact interpret Daoist texts to reformulate Confucianism!
You point out the Yellow Turbans arising during the fall of the Han, yet there was another significant group called the Celestial Masters that arose whose ideas of the "Celestial Bureaucracy" can be seen as influenced by a Confucian heritage. Later in Tang and Song there occurs a massive influx of Buddhist ideas which profoundly alter both Confucianism (so called "Neo-Confucianism") and Daoism (Quanzhen for instance), eventually leading to a mixture of all three movements so that today a "Daoist" temple may contain a statue of Confucius, Lao Zi, the Yellow Emperor, and the buddhist goddess Kuan Yin!
Needless to say the story here is one of dynamic interaction and merger rather than hard distinctions! While there was certainly competition between these groups (for instance the Daoists are accused of inciting anti-Buddhist purges during the Tang by the government which were quite bloody and wide spread) on the historical whole we can say they have become very closely knit. Naturally it is difficult to incorporate this into a game yet if we look for instance at the examples of Korea or Japan, this mixture was often imported together in varying ways in the adoption of Sinic culture. I don't know if this helps, just thought I'd add my 2 cents. VERY interesting mod!