payn
Glory to Marik
One thing that gamers might be at odds with is the idea of playing to faults and failures. D&D is power fantasy for a lot of folks and being rewarded for losing seems strange. I mean, in narrative game its how you earn XP, its how you are lead to play the game. In D&D thats through combat, exploration, and social pillars. Applications of your feats and skills are how you play your character, not by role playing their BIFTs. So, I would consider both the 20 and 1 rolls should net inspiration to encourage playing up both success and failure for the players. This encourages both the heroic nature of D&D, but also allows personality lowlights to also have a place in the game.