Ok, I agree with you on the Telvanni Robes:
However, His are the only source of wearable Spell Absorbtion in the game, including all 3 DLCs so far. I haven't really played with Tentacle Explosion much so far, it might be cool. The sword looks unique, with a unique animation, but yeah, 15 points Stamina Absorbtion, where have I seen that before? (The Drainheart swords are actually better for their weight.) I guess that's why God created the Creation Kit, amiright?
For the Telvanni Robes, I would be satisfied with something like 'All Spells Cost 10% less Magicka' or somesuch. Being basically a Retex of Necromancer Robes is beyond Lame. I wasn't really arguing with you, just the rationale that He's powerful, and therefore His kit should be too. As for the mask, that's probably the biggest disappointment of all. It'a Circlet of magicka, leveled, like the Mage's Circlet, with a little Armor, but other than that, that's it? Shout Cooldown would make the most sense, maybe 10% or so so as not to me Too OP (Makes it 50% stacked with the Blessing, and Amulet of Talos.) The Boots/Gloves are basically identical, other than where you wear them, and redundant if you're going for 100% Spell Absorbtion. I guess that means you have your choice of Shrouded gloves, or Boots of, something cool. IDK, water walking? I guess Muffle is Okay, but if you're serious about Sneaking, you should be up to Silence long before you run into this guy (I certainly was.)