Just to play devil's advocate on the city naming for a bit, I think Firaxis thought that it would be so minor that people wouldn't notice it was gone, as well as being a device to "show off" the civ switching. As you would have 1/3 of your cities with different names for each civ you switch to by Modern era. That they were able to release the functionality so quickly after launch could suggest that they always knew how to put it in, and just decided not to, rather than forgot/ran out of time to add it. An honest, if silly, mistake as it just added to the list of underbaked items people felt were lacking in CivVII