You are correct! I'm pretty sure that there is no such signal in that location in the real world, but standard MEC/B&M practice has a blue doll arm indicating a track between the signal mast and the controlled track. It follows practice, and I thought it looked cool while serving a real function on my layout.
I like this, as is, but thought of something you might want to try. The camera is clearly centered on the vehicle it rode on, which wouldn't be the case from the engineer's seat. I'm guessing alignment took a lot of time to get right, between the overlay and the layout video. I'm glad you didn't use a GP-7 overlay... we'd have missed out on the whole left half of the layout! :-)
The camera location is pretty much fixed, due to the size of the camera and clearances. I don't know any way to move the viewpoint to more accurately mimic what the engineer would see, but you are certainly correct in your observation! Maybe some day if cameras get smaller it may be something we could do.
@@HappyHoboTrains I hear some folks have micro-fiber-optic cameras that ride around on tiny drones that look just like insects, but last time I searched that out on Google, my phone started acting weird, and this black van marked Flowers By Irene started followin me around. I dunno, I think you're good to go like it is. :-)