It is unlikely the Fallen Wolves will outright vanish because, while there was one contract to kill blades, there is an entire contract system that requires them, and there is no other efficient way to get keys. It'd effectively cut off the Reef.
That said, the rest of this is well done. Good job.
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Bounties are gone also.
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Check out the patch notes. Not sure about the random patrols/Ether chests, but the Wolves in the wild are gone.