This isn't the promised reply, but I thought that it would be good to refresh this thread before it becomes buried too deeply in the archives.
It's very interesting that you suggest philosophical compatibility between Neo-Confucianism and Catholicism. If I remember correctly, Matteo Ricci actually opposed the Neo-Confucians in his magnum opus, The True Meaning of the Lord of Heaven. [As a side note, as great a scholar as he was, Ricci sometimes misjudged certain aspects of Taoism and Buddhism.] He argued that Catholicism was compatible with a return to a sort of primitive Confucianism as espoused by the "former kings" (xian1 wang2) in the Five Classics and transmitted by Confucius but obscured by latter generations. Ricci seems to have some problems with Mencius, and therefore would have been opposed to the prevailing Confucian school of Zhuxi which regarded Mencius as the orthodox transmitter of Confucius's doctrine. [A common point of digression between Mencius and his philosophical opponents was the question of human nature, which Mencius declared to be good. He uses as example of a child falling into a well and asks if anyone seeing such a sight could not be moved by pity. On the opposite side of the argument was Xunzi, who declared human nature to be evil. His argument is wordier and draws on the authority of ancient sages, quoting them as lamenting over human nature. A latter philosopher, Yangzi, a sort of Daoist-Confucian, declared human nature to be a mix of good and evil. In my opinion, Yangzi and Xunzi are more compatible with Catholic teaching on man's fallen nature. Xunzi's position may be extreme in principle but the examples he uses are entirely compatible with Catholicism. Interestingly, he is regarded as a "heretic" by orthodox Confucians, so much so that a prominent Confucian scholar in 20th century Vietnam described him as the Martin Luther of Confucianism. Yangzi is regarded as heterodox by some and was described as "useless" by another philosopher. Ironically, in modern China, we have children being run over by cars and no one moving to help - Mencius must be rolling around in his grave].
As a side note, I have been reading the Mingxin Baojian which is a book comprising of choice quotations from various Confucian, Taoist, and very selective Buddhist sources. It was very popular in pre 20th-century East Asia - China, Japan, Korea, and Vietnam - as an instructional book for children. I would be comfortable saying that reading this book is equivalent to a daily meditation on a spiritual writing - for me at least. If one were able to live according to the teachings in it, one would be well on the way to being a Catholic saint.
I believe this is the entire text in the original Chinese with Vietnamese translation:
Mingxin Baojian-------------
Perhaps it would be more productive to try to start a conversation around these topics and see where they go as opposed to posting huge chunks of texts that would appeal only to a select few that would be familiar with the references.