I will pose this question to 'gunrunnerjohn' since he appears to have an excellent handle on the operation of 'modern' toy trains (three rail for this discussion). However everyone is welcome to chime in.
It appears to me that the current electronic method used to operate our trains is not a well thought out end game. They are complicated to use, subject to failure and obsolescence. Why then do we not move to a 'heads up' display method of operation? The Air Force has been doing it for years and car manufacturers have started the process. In the medical field wonderful strides have been made using eye control to interact with ones environment.
Seems to me that a pair of glasses with a display and a camera in the engine could really take this hobby to the next level. Probably would require a big screen TV in the room so that others could enjoy the ride.