Every so often I’ve found it difficult to see a signal because it is obscured by part of the cab, outside views can help apart from on the Bakerloo line when you are in a tunnel. I notice on the console controller in immersion mode that left and right on the left hand stick doesn’t do anything, therefore as a suggestion it would be great to allow you to use this stick to just lean your head a little left or right, as it might help in situations where there is a window pillar blocking sight of a signal. Then perhaps have it auto centre when you left go if the left stick.
I fully agree, this would be very helpful for signal sighting. I sometimes find myself moving my head in real life when trying to see a signal when I'm really immersed in the game so something like this would allow me to do it in the game.