I think your plans for diplomacy with the goblins are pretty doomed because we don't have flashcards to explain the more complicated ideas with. I'm not at all sure that goblins en masse will be able to grasp what you're suggesting (dropping hints, really?) and any kind of boss goblin will probably order us all eaten for challenging his authority. I'm also skeptical about the "break their morale" plan - we tried that last time and IIRC LCP called it a "death march" out of character.

However! Some of the phrasing in how Wadim's journey with the goblins has been described implies to me that perhaps he's managed to become treated as a guest rather than a prisoner, in which case diplomacy might be the best way to speak to him. This is kind of why I'm suggesting a stakeout - I'm assuming if we wait long enough he'll show up.

In addition, there are so many tracks i suspect the camp may mostly empty itself out come nightfall, as everyone goes off raiding and leaves some guards behind.