I love the day night cycle , but it think Bungee missed a trick with the night time.
Imagine the sense of foreboding as you see the sun setting, knowing that the higher level Hive masters are going to be out in numbers, and that the darkness will cover the land making visibility limited without your ghost light.
Will you survive the night or succumb to the darkness....
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Also the enemies could get in bigger and larger mobs and higher levels per minute