Yes - the current set up is not good customer service -it is important that the boards should show the 23nd and 3rd trains (yes, you can have a look at the display in the station itself, but we all know that there are often slippages / changes in arrival times)!

It sounds ridiculously easy to shorten Highbury & Islington so it is on one line, but no doubt it requires a project to be raised by someone in Southern. Which requires business justification.

So get emailing and complaining to Southern and the Overground. I'm off to the respective sites right now.