Move Archin Hammerhead to 121, -320 Here:

The flow of the quest is broken imho, by having to run all the way to Slaver pits to find more elementals, you could centralize the quest at the slaver pits and have the same amount of spawns without significantly impacting the zone itself.
These spawns would be changed to elementals:

This also leaves new players free to kill the Warden without getting ganked by elementals. The one on the ledge up to Skullcracker is particularly nasty as new players do not expect it:

There was a gnome corpse there from a new guy but it disappeared already.
This is just my feedback from playing through the quest.