One common complaint with Ghost SEED (and any location-based game, really) is that the first few players in an area have no one to play with. This is bad enough in a PVE game like Parallel Kingdoms. In a PVP game, it's murder. With the Quantum Density update, Ghost SEED adapts to the amount of activity in your area, increasing your reach (and the range of your SEEDs) if local activity is low.
Source:
