You now have a domestic market after certain buildings being built that can change your trading experience which makes me think natives are more useful for long term trade. You can sell extra ships you have now, but ships now take tools, rope, sail cloth and also sometimes guns, swords and cannon goods.

Now this mod adds more ways to play and options you might not have thought of. All cities have a city hall that must be upgraded once you create a settlement before you build other buildings and upgraded multiple times for others. Your cities have a sort of tier list on the type of buildings you can build and tier of building you can build.

Your cities have health and happiness which makes you think carefully on how many slaves you can place in a city or if you can even afford to have slaves in your city. Your cities once their borders expand can work work an extra tile out.

This mod brings many additions to the table.