I would like to submit another try at defining the borders of Quirnial Province. Here is my proposal. The borders are drawn immediately to the south of the proposed canal, to bring Quirnial Province up to a final size of 9 cities, which is considered about the optimum level of cities. The northern border would be the border with Aventine province, the eastern border is the sea in between Quirnial Province and the Aztec cities. Here is the proposal, the southern border is shown in blue:
