Hummmm!!!

Currently when a quest spawns a monster ...... OOOPSY!!! [:S]

This could be an issue. I was on on "repose island" yesterday mininig obsedian, when a weird lvl 73 golem (fancy new name prystaline or something). Sice he was beetween me and the exit of this starnge colcano / crater, I killed it.

This could be an issue with the quester ... if people kill their mobs.

You may ...
1) consider putting these special mobs in isolated place.
2) Have a tag, that would identify them as quest item
3) Have an auto respawn until killed by the quester.

Another issue you may have ... (other game had trouble with)
What if someone activate the trigger before the first one completed his quest.

But this spawn quest is a good step in the rigth direction.. Gratz AE [Y]