I'm finding that, in trying to work out where to establish trade routes, I am having to flick back and forth through quite a number of links. With this in mind, I have a few suggestions to make setting trades routes less of a chore:
1: A "view all known markets" type page, showing the buy/sell prices and amounts stored in warehouses and markets for all "known" markets (those that you have a warehouse in, plus those you have ships parked in).
2: A more comprehensive "view trade routes" page. The recent updates are _BRILLIANT_ (to say the least), but I think a few minor things could make it even more useful, specifically: showing how long the route takes, and the buy/sell prices of what is being traded at the two ports.
3: When setting a auto trade route, it would be nice to know how much time the route will take before committing a fleet to that route. This could either be done by having a page that asks to confirm the route before it is taken (probably the easiest to code), or by having some script within the trade set-up page dynamically calculate and display the voyage time for the currently selected route for each available fleet (more difficult to code, but more useful for the trader).
These ideas should make it much quicker/easier to identify the profitability of current or prospective routes, and cut down on the current page flicking and grinding work needed to accomplish the same result.