There have been several different feature requests relating to routing lately. I'd be happy to see a simple feature where you click on a button within a bus and it displays a list of all the buses and tracks that are routed to that bus.
This would be helpful as a quick check to see if you have accidentally outputted something to to the wrong bus. Sometimes you see a meter moving when it shouldn't be or not moving when it should be. One click could tell you what need to know or at least provide a big clue and save a bit of time you would have otherwise spent investigating the problem.