One part of me would want to build like a 1/5 scale replica of a real handbrake on the front of the layout, which begs the question of if I would want a vertical or horizontal wheel, and whether or not I would want it to have a mechanical advantage built in to it too.
Then the other half of me remembers that I deal with both of those in 1/1 and the solution that Peteski’s friend came up with becomes a whole lot nicer.