Maybe it sometimes cuts to a DM behind a screen, who has memorable catch-phrases like "*Evil Cackle*", "Roll for Initiative" and "Are you sure you want to do that?"
Print those on the merchandise (T-shirts, mugs, fluffy DM dolls, ...) and you're home and dry.
I would love a "Christmas Story"-esque narrator through the whole movie. Play it as a comedy to separate it from all the other wannabe LotR stuff we got recently.
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