Ever have a player on your server who built a truley impressive base, and for whatever reason stopped logging in?
What if when a Purge broke into a base, the base could become overrun. If a base was abandoned, it would become overrun. By overrun I mean that thrall camps start to spawn, and the thralls turn abandoned t3 bases that existed for x amount of time before abandonment, into dynamic server unique dungeons.
Spark notes version:
Thralls take over abandoned bases