The bad side of that its how SaRlow could make the Players discover that
like, Tenna its not even in the game, and Mr wallshmallow's guy gonna need made dialogues, and tips, and a tip of progress in case of we discover the Battle.
My ideia its more like a Greed mode or other route?
For me, the best way of yout ideia works, its like a rework for add a Dealer for the shops, and we can talk with him and he gave us the tips for the Secret battles, buts its too much work for him I think.