Currently happy with how much is coming from Traders. "Caps" industries (which currently means Brahmin trading and selling Slaves) are a little low.
Boosting these things so they are a) worth bothing with and b) the source of inter-player competition will happen in the future. Perhaps a boost to TC reward caps too.
Of course keep in mind that, getting bases should not be easy, nor should getting caps to trade (Barter skill is there to trade without using caps).