You know how in the later game you have difficulty remembering what city specs in what as they level? (Hell I have trouble after three cities ). I didn't want to start naming my cities: Gold Producer. But what I did do was come up with four prefixes and to my surprise they still look and sound fantasy-ish, but they make it very easy to remember the specializations. Guess what these cities do.
So when you have a whole bunch: Gol Turunth and Gol Maral etc it does give a unifying sounding system to my cities. Still looks and sounds like fantasy names and keeps what's spec'd in what. Dunno, the first three letters of what they're in just seems to work for me. I do have the odd Fort for occasionally I like a city that gets the random unit.