Thought you guys might enjoy, I've harvested an RS3 and converted my Williams F3 to battery powered Lionchief (not plus).
It needs quite a bit more work; Add JSTs for motors, switch to series wiring to slow down speed step 1, wire speaker, and remove power pickups from both powered and dummy locos.
Here's a quick video of it running on some of my new colored 3d printed plastic track.
I really need to finish the CAD for turnouts.
If there's any interest, I have no problem offering my services to convert locos to deadrail (battery power) and remote control.