We ran this zone last night, cleared up to the 4th name Geradin the Grotesque. During this encounter we had some "engineered gearbox" ( from the 1st encounter Aegragis the Engineer) aggro us and wipe the group. I am sure this isn't intended.
LOL yeah he's a big meaniehead, I bet he was just thinking about the fastest route to Maccas for Hashbrowns.
Mb if you never had players dying on it they might not spawn .... Mob has got a buff that will spawn them on kills Edit: The first mob will keep spawning Engineers until you loot the corpse and will also respawn the named after zone shuts down (needs a fix)
An old problem with mobs that kick out adds constantly; the Mucus in the original Chelsith does the same thing... one glob every few seconds until his corpse goes away.