Here I go, again not saying everything I should. What can I say, I'm just so excited about this discussion that I'm not painting the full picture.
So, an upcoming feature that's currently in the works is introducing an item quality to disciplines which will also require a like quality vessel to slot those disciplines. I'm going to hold off on saying any more about this since Thomas Blair may have a better explanation for it, but hopefully this aspect will still keep some of that Shadowbane feel to it.