If a broad cross section of owners of Lionel rtr starter sets were asked, I'd say among their top concerns is the anemic smoke output from the majority of piston driven puffer smoke units installed in most Lionel RTR starter set engines. So, I'd tell Lionel that for the relatively little extra it would cost to install fan driven smoke units in ALL their locomotives, they should start doing that immediately. MTH does it and so can/SHOULD Lionel.
Kenn