Renaming villages in the villages.sql might be sufficient.
Windmill-Workshop rename is actually in an xml file. Core Roots folder, civupbuildings.xml
Musketman-Great War Infantry are renamed in civupdata.xml (same folder as above). xml should also be easy to edit with notepad/notepad++
Arquebusier doesn't exist as a default text reference, like the blast furnace one, so removing it entirely would break the text for it yes.
Personally I found most of the renames much better (especially the arque-rifle change because it removes the lame GWI name, and the "no windmill on a hill city" doesn't make sense to me either), but if it's that jarring for you, it's easy enough to fix for now.
Windmill-Workshop rename is actually in an xml file. Core Roots folder, civupbuildings.xml
Musketman-Great War Infantry are renamed in civupdata.xml (same folder as above). xml should also be easy to edit with notepad/notepad++
Arquebusier doesn't exist as a default text reference, like the blast furnace one, so removing it entirely would break the text for it yes.
Personally I found most of the renames much better (especially the arque-rifle change because it removes the lame GWI name, and the "no windmill on a hill city" doesn't make sense to me either), but if it's that jarring for you, it's easy enough to fix for now.