I agree with the sentiments expressed at the requested move discussion linked above, and disagree with moving it again to Philadelphia, Pennsylvania. Philadelphia is a city of worldwide prominence, with a unique name making the title "Philadelphia" rather unambigous. The peculiarity of appending the subnational division to the name of an article of a globally important city with an unambiguous name seems to be unique to our US city articles; not even our Canadian city articles are named that way (cf. Toronto, Montreal). ✽