Does it have to stay on mobile devices? Bit of niche but if its not a resource hog it could be handy for giving NPC's in games more interesting dialogue without having use Even better if it could be tuned in someway to allow dialogue to influence NPC behavior or actions.
It would be fascinating if NPCs had more backstory to them and more complex behaviors. Although I would imagine it would be near impossible to test since anything could influence their behavior.
You'd have someone on youtube cheesing games by running scamming npcs.