For all players having this quest to be completed, any GM could start an event to kill Euranikus ?
As for AQ doors event, this boss requires more than one raid and both factions can participate (as far as I remember) and complete it.
For technical issues, it would be awesome if a GM could gather enough people and help with the completion of this quest.
Beyond the event, there's obviously the BiS healer NR necklace as reward
http://db.vanillagaming.org/?item=21531