Thanks for your comment! Unfortunately I didn't have time to playtest this so I'm not completely sure how it would work with actual people, but I have the impression that the "board game" part of it is too shallow to be interesting, so it will naturally gravitate towards figuring out what happens to the explorers.
I guess the story will be a mix of vignettes with descriptions of the places they reach, how they look, and what they find in them (aided by the generation of the settlement in the past); and the more dramatic, short scenes triggered by finding treasure and by encountering problems that raise the tension between characters. The former give context and flavour, and the latter give character development, optional roleplay/conversation, and the dramatic bits.
But again, that's what I _expect_ people will gravitate towards, I'll have to play to find out! 😄