For the average fan to become someone that might be accurately described as "open-minded, reasonable, and easy-going".
An animated D&D TV series, something along the lines of Clone Wars. In the first episode have the comic relief bullywug PC Raj-Raj get eaten by a dragon to set the tone of the series as a dark and serious drama about heroes.
That ship has sailed. Pop-culture-wise, D&D is silly and fun. This is like trying to make a dark and serious drama out of Archie Comics.An animated D&D TV series, something along the lines of Clone Wars. In the first episode have the comic relief bullywug PC Raj-Raj get eaten by a dragon to set the tone of the series as a dark and serious drama about heroes.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.