Adrian, I do foresee a much larger issue with switching the Legacy signal. Since any large layout will have multiple TIU's and multiple channels, you need to have multiple switches to manage the Legacy signal interruption. However, you can only have one Legacy signal source in the entire layout, so there's the issue of a major disconnect between this unit and the TMCC Buffer. The only way I see this working is somehow having all these interrupter switches feeding a common switch that turns off the Legacy signal. Obviously, you are then dealing with the propagation delay as usually the TIU's are scattered all over the layout with a really large layout.
Until we can somehow address that issue, I don't see how this can work. Maybe balancing the Legacy signal between the center rails and the outside rails is a better bet after all.
