Guns,
John that would definitely be cool, the other thing I would like to see from Lionel, would be CC similar to MTH's Silver Bullet Train cars, wireless operation of rolling stock doors with smoke coming out of a refrigerated Milk Car, A CC spot light car with rotating lights, turned off and on by the CC, a CC hook and ladder fire car, with swivel boom and ladder that extends. A CC operational Tin Plate 810 Crane Car that works realistically. A CC log station, would be seriously cool also.
The Lionel engineers could have a ball bringing operational rolling stock into the technical modern era. Some of their stuff is timeless and making it CC would be incredible. I do believe it would bring the kids back to this hobby of ours in a big way.
Making it phone APP controlled would be icing on the cake. This Legacy CC on rolling stock could be a big big money maker for Lionel, if they played this all correctly and the product worked properly.
PCRR/Dave