Great video, it looks amazing!
I've also discovered that the Blackstone C19's behave nicely enough to add a third locomotive and another 15 cars to the end of the train, without bunching, dragging, or derailing.
And just think how common 'dummy' locos used to be. Some folks would even gut steam engines of their motors and gears to make dummies out of them. DCC, I guess, ended that problem and now folks are using as many locos as they want.
I've never doubleheaded
anything as my trains aren't long enough to merit doing so and the real RR I model never did so. Heck, i wouldn't even know how to consist power on my DCC even if I wanted to!