I have recently acquired Cargo Train 60198, which is a great set. I figured out it could do with a shunter, so I started designing one.
The main things I am after are:
Something small
With accurate and releastic speeds (slow!) and acceleration (slow!)
Playable and not too difficult to build
So the following is largely inspired by other topics, including:
There it goes:
Unfortunately, the Powered Up motor takes up too much space for the driver to sit inside the cab, but at least they can hang out from the door!
Designed largely around placement of motor + battery box like this, giving it the same overall length and wheelbase I think of Shunter 7760.