Trade port routes
I understand the basic idea of how trade ports work with the longer the route the more lucrative trade ports will become. What I'd like to know is is there ever a situation where destroying a trade port will actually be worth more to your income than keeping it there? I've noticed the computer should pick out the longest route that is available to your empire, but if you make a specific effort to make it wind in a snake like pattern through your empire rather than going through it, will that make trade ports more valuable as opposed to just building a trade port on each planet?