I like Johan’s points about the Plasma Power tag and a model around 16 to 32 inches across (1/12 to 1/6 scale more or less). A button to push, some LEDs showing where the action is at that phase, and a jackpot type of payoff display- maybe all the LEDS flash in crazy patterns for a second or two.
Plasma Power reminds me of Fluid Power, which the hydraulics industry uses to clean up an image that could also be perceived as oily and leaky. Neutrons alone took too much effort for me to get my head around.
To summarize, think in terms of ultimate end user benefits, package them so the auto industry can easily see how to sell that package, and leave the techie stuff to FF.