As other folks have mentioned, asset cards are not very useful/special in game play right now. What if the narrator could create special challenges that can only be completed with a specific asset card? This would give asset cards more value as well as force players to use up certain asset cards at important junctures. For example, if an NPC sends the players on a quest and gives them a special key to open a certain chest, it kind of defeats the purpose of the special key if they open the chest using a "Clever" strength card. Right now, it makes more sense to use a strength card on a single-point challenge than an asset because assets are neutral and won't give the players a strong outcome and control of the story.