The miasma area is nice. I like the idea of a forest bog but it's not creepy enough. Every map design they do is always built around the travel line for a sparrow. They could have put in heavier fog, some small openings with random screebs that pop out. The fear of not knowing when and where something will happen would be better than an open area telegraphed spawns that is quickly forgotten. I will say, I like how the lost sector entrances are done.