I just thought it would be kind of cool to implement, I mean some engines have swinging bells and the New Vision line engine coming out has apparently more realistic cylinder steam effect in theory. Though I do have a proof of concept almost ready, I just haven't been able to test it out on my engine house yet since that is the first thing I want to test it on.
I was able to simulate it on tinker cad for a least a single stall engine house. Of course I decided to implement it using a toggle switch, an arduino type board and two servos, and lots of programming being involved.