I wanted to add I did from 70-73 the first 7 pulls in Utagarde Keep. Almost 100% melee abilities.
Lol, you just found the most boring way to level these 3 levels.... and you missed all the amazing quests in Borean Toundra and Howling Fjord as well as the reputation you'll have to grind anyway in the end. Congratulation! -_-