Just in general trade income is really strong in that it totally blows any other income out of the water at any point in the game for almost everyone. Certain nodes are also way way stronger than others, namely end nodes or other centers like Malacca / Caribbean / Constantinople / Sinai. Japan for instance has a terrible trade network (like really bad), as does Ming or anyone in SEA besides Malacca which makes their income way lower than other nations. Strange considering how much important the economy of Japan is in real life. You'd mostly be better off sending a merchant to malacca and collecting there than in Japan that's how crazy it is, even if your trade power is terrible. I'm fairly new to the game so I don't know how it was in the past but I just seem to find myself doing the same things every game especially if I'm European. Is it even possible to build a nation such as Japan with a strong economy with their trade route as bad as it is.