For thos of you wondering why the little goblin won't offer up her breadcrumb quest, "Bread and Circuses" [35922] its because she doesn't offer it until the prerequisite [35098] "Lok'Rath is Secured" is completed. This is what unlocked it for me.
It seems that despite the quest levels, and the list order, the correct way to complete the chapters, and unlock the breadcrumbs alongf the way is:
The Might of Steel and Blood - initial chapter.
Remains of Telar and Trouble at Overwatch - note that the second requires level 99, but is needed to unlock the breadcrumb to the the next area.
The Shadow of the Void and The Darek Heart of Oshu'gun
The Taking of Lok'rath - This will require levle 100, but is needed to unlock the breadcrumb for Ring of Trials
The Ring of Trials and The Legacy of Garrosh Heallscream