I leveled my gwf from 60 to 70 by just farming Blulettes/Gorgons/Cloud Giants in around 4-6 hours gameplay max. The only quests you need are in the Spinward Rise area for the artifact mainhand, everything else is <font color="orange">HAMSTER</font>.
If you dared to even read the big white letters down the character selection screen you'd noticed that they say: Dragon shard is down characters on this server won't be displayed.