I ran into the non-buildable archer thing.  It looks like there are some new prereqs to building an archer unit, that of the archery range.  I haven't gone in and tested whether you can get the archery range and then build them without superior archers, but if you have superior archers, it doesn't seem like you can build that building, therefore, no archers.

I went through and tried to mod this, so that it was easily accessible, making the city size requirement level one, but that didn't help.  Either this is not moddable, or having superior archers does NOT give you the archery tech, which is needed for the building.