I think it would be great if there would be other ways to get the maximum number of trade routes and increase the amount of trade revenue by a means of "trust" would be great after you've developed the first trade tech. You could have something like plus for "turns since war" *if you're in a war it is a minus* with plus for influence, diplomacy as well as your economic tech and then minuses for other things such as if you have loyalty over so much then people think your private sector may be too loyal. But I think that would be great as it would add some bonuses to being a good leader and what not and would make it so you can't fund a war on trade *although, another cool thing would be to also be able to switch between money and production on trade*