I also think a blank interior is probably fine, as it allows for more diversity of use by potential players. One thing I feel is missing though is some details around the camp tents. Like, I feel like a small fire, a couple of barrels with spears sticking out the top, and things of that nature would make it feel more "lived-in". As it is now, the camp area seems a bit sparse to me, and I think some little details to show what the expeditionary force is like would be interesting. Just a thought though. At any rate, what you've got so far is super sharp!