Ghosts
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I started up a new bowman and the first 5-6 camps I ran into (both POI and not POI) were all ghosts. In contrast, I've seen no ghosts in the highest level areas when I've been running around on my higher level characters.
The weapons needed to damage ghosts are not newbie weapons. Ghosts spawns and POI should not be showing up until somewhere around medium level difficulty areas or whenever you think it's reasonable for players to have obtained those weapons.
Right now, I don't think they are a positive factor in the newbie experience.