I am new to this thread, but my take would be you can run any of the new engines (Shinkansen, conventional line, Steam Locomotive) that were released and depending which it is the activation track will do the appropriate action? For example the new C62 steam set does one action, the E235 something else, etc...
Here are a couple videos of the C62 and E235 for reference:
C62
https://youtu.be/ZZ4dh_jJGIU
E235:
https://youtu.be/ycNkEiSaK9w
https://youtu.be/TdkF-gxNDLY
Here are a couple videos of the C62 and E235 for reference:
C62
https://youtu.be/ZZ4dh_jJGIU
E235:
https://youtu.be/ycNkEiSaK9w
https://youtu.be/TdkF-gxNDLY