If the whimsy wasn't there in the product, my group would probably put it in ourselves, anyway. Playing HotDQ, when the players came to the ambush spot after the attack on Greenest, one player critted their Perception roll and spotted the ambushers. So the group pretended to be straggling mercenaries. The cultists welcomed them to the ambush spot, and they all settled in to wait for the PCs, who were of course already there. One Affably Evil cultist spent the time encouraging the PCs to join the Cult of the Dragon, talking about the decent hours, good benefits package (including dental), and how wonderful it was going to be when Tiamat-Praised-Be-Her-Name came back. Afterwards, there were shenanigans, and a good time was had by all.