How about eliminating green markers on the front of diesels. I'd take white maybe, red rarely. And allow us to turn them off. Not a bad option for steam as well.
John, I'm with you on the flames from the stack. A lot of the old F7s on the EL in the last days went through my town lighting up the night sky.
Step lighting if done right (not overdone) would look good.
The random "spit" of air dryers when stopped would add to the RR atmosphere.
This is fun!
