Well I created another guide, I dont think I put it in the right place, but I'm sure Ludo will find it (or Someone else).
The guide is a compiled from the Zone in the Broken Isle, just straight moving of all Treasures listed, into a new guide, once Ludo fixes a small issue with Proxmiaty sort working again, then guide will just point you to the closest treasure, etc.
The treasures from Suramar list some (or most) of the larger mana crystals, and the items to increase you mana storage.
There will probably be some slight issues was coords, as they were based on where you were in the main guide.
To note, though if you HAD completed the main guides on Rank 3, you should NOT have any left to find in this guide.