I'm currently working on T7 and I have to agree with the op's (Ydiss) observations of this zone.
T7 seems to be missing content. DSK 1 /2 need a companion zone, similar to how PoF and VP complement each other.
My major observations so far:
- Lack of interesting type 16, 17, and 18 augs
- Slot specific augment quests like Sleepers, PoA would fit perfectly in this tier
- Not enough weapon augments, it would be great to be able to gear out from T7 and not have to use old content augs to fill in the gaps
- Lore tag needs to be removed from most weapon augs. For dual wielding classes it is especially hard to properly augment the offhand weapon due to lore tag. There are many trips to the distiller to destroy augs when you get a better weapon
- Missing gear (already covered by Ydiss). There are also no 2 handed weapons except on the tier end boss (Xeru)
- Overall, Xeru's loot table is pretty uninteresting for his status. The extra type 8 slot is really the only difference between his loot table and any other boss in the zone. It would be a nice perk if he dropped spells that are only available on this end boss (Like the Sleeper, Cazic Thule, Phara Dar)
- DSK1 bosses Red Fang and Koritz seem to be way out of whack. I've got all but Xeru on farm status in DSK2 so I dont have to mess with those two anymore, but now that I have more experience in DSK2, DSK1 just feels unbalanced. Adrianna, Christine, Azail, Hatchet, and even Visath are easier fights for me than Red Fang / Koritz