During this week of PTR testing I did this dungeon 7 times. I think there some issues with the difficulty as well as issues with the pacing of the dungeon. I think its about one key level harder than the other keys on the PTR. Now this could change but, pugs were struggling on this on PTR and I expect it to be a menace on live for more casual players. I know two title level teams that are not pushing next season in part because of this dungeon.
1. The 2nd boss trash is completely on rails. You have to do FIVE pulls in a row where you fight 1-3 mobs. It really drags on and DPS players hate this kind of thing.
– FIX - make all four king packs active so that players may combine them as they choose.
– FIX 2 - Make 2 of the king packs activate at the same time so its two sets of two instead of four separate pulls
– FIX 3 - Reduce the health of these packs so its rapid fire killing fun
2. The Shaman’s Healing tide totem is stronger than a resto shaman on retail. Like a resto shaman tide totem is 3 min cd and this mob can summon one every 15 seconds that does MORE healing than a shaman lmao.
– FIX 1 - Make the totem heal every 4 or 6 seconds instead of every 2 seconds.
– FIX 2 - Make the totem a Healing STREAM totem instead of a TIDE totem. So it only heals a few mobs at a time. – FIX 3 - Put a cap so it can only spawn 2 totems before running out of energy. This would prevent packs living for 3 min and limit the amount of problems a low knowledge group faces
Hopefully blizz makes it fun but I felt like I could give them ideas 
