This adds a psychological survival layer to the game, emphasizing the weight of Link being a man out of time, wandering a kingdom that died 100 years ago.
You start seeing "Echoes" of the past. For a split second, a ruined house might appear whole, with the translucent silhouettes of NPCs performing daily chores. If you approach, they vanish into ash. [The legend of Zelda] Deathly Loneliness [BotW]
For a concept titled a compelling gameplay feature would be The Echo of the Departed. Feature: The Echo of the Departed This adds a psychological survival layer to the