I know there is several topics about this. But here is my "two cents".
#1. Find a different way to put 3 speakers in an engine. The extra tether isn't worth the hassle.
#2. Put a engineer figure in the switcher engine that moves his head looking out the window.
#3. The swinging bell should be standard on Legacy steamers.
#4. There should be a MINIMUM dimension for roller spacing. Especially for tenders. No dropout over switches?