I generally like to create as money trade routes as possible and find that once you have a large amount of existing routes it can you cumbersome having to manually selecting targets for freighters.  In usually involves you clicking on a target world and looking for the dotted line indicating an existing trade route (which I admit is a handy UI feature, however an overlay highlighting these dotted lines would be very welcome) then checking to see if any of your in flight freighters (which if your building a expansive trade empire could be quite a lot) are all ready heading to this target   

It would be great if you had the option to automate new freighters to head to the closest colony/core world of a particular Civ without an existing trade route.

I know there is an automation screen but it wont provide this functionality.  It would be great if it could be updated to provide the a above automation.