That would be an interesting inclusion in the Bible. It has specific admonitions against certain things that the "Left" in the US would disagree with, though in this timeline, that might not come about if this had been in the Bible from the start of canonization.
You could take the Fasting section to also say the week starts on Sunday, not Monday as is customary now in some countries.
The Baptism section could avoid some questions regarding that which emerged after the Protestant Reformation, I agree. If the Didache had explicitly said to baptize infants, that would likely butterfly away the Baptists too, since they do not baptize infants, and prefer immersion to sprinkling. I wonder what
John Smyth would have said had he read that in the Bible. Without Baptists, that would affect the religious development of the colonies in North America, given the large concentrations of Baptists in the south.
The Eucharist section may have ramifications for Protestant/Catholic relations, as currently, Protestants are excluded from communion in a Catholic church, whereas this just says "let no one eat or drink of your Eucharist, unless they have been baptized into the name of the Lord."
Interesting thought experiment. Perhaps you should write a timeline.