My last game was quite fun. My capital city had quite good production from the beginning, so I was looking to turn it into a production city. The interesting part was, with a river and being by the sea, it also had quite good commerce. And then the fun happened: first a gems resource popped up in a mined hill. A few hundred years later, a gold resource came up in another hill. And yet later, ANOTHER gold appeared! At this point, the capital was the main science center, and with also coal and iron being around (coal popped as well...was not there from the start!), I built iron works and oxford university there. Have a look, who needs specialised cities again?
(Of course I see the value of specialised cities, but I still use generalized ones more often.)
(Of course I see the value of specialised cities, but I still use generalized ones more often.)