I had fun with / really like the idea of this, and I think you should continue working on the concept!
Right now the ground characteristics thing is quite confusing to me, I'm sure this would be cleaned up by a more comprehensive tutorial.
Getting the results could have some kind of mechanical delay in my view, right now it feels pretty anticlimactic. One suggestion I'd make is adding some kind of dice roll or something between the expedition and results section that can add bonuses or influence the result. I don't exactly know the specifics, but just adding something between those parts would really help with pacing and the weight of each expedition.
Thanks for sharing this, had fun with it :)