Your statement is absolutely correct - the configuration is for testing only! The ESU smoke unit, or a modified Lionel surrogate I've figured out, will simply connect to the six specialized LokSound L V4.0 (and any other L or XL decoder) outputs designed for ESU smoke units.
I am putting together a follow-up post, inspired by your original, fantastic smoke unit post, on how to convert a Lionel 27 ohm smoke unit (essentially by adding an axial, glass-encased 100K thermistor with a B parameter of about 3900 Kelvin), so that it can use the LokSound L's ESU smoke unit connections directly. As part of that post, I will point out that the ESU Profi board, in my experience (or inexperience) will NOT source sufficient power for a smoke unit, even with a hefty 14.8V LiPo battery power supply. Direct smoke unit connections, even with an authentic ESU 54678 smoke unit, will shut down the board when the smoke unit is turned on!
Thanks again for inspiring posts.
