ToME: the Tales of Maj'Eyal

I was thinking, as a way to make the dungeon a bit more rewarding, some kind of ubber unique object (even better than the unique ones you can get from the merchant in the last hope. Both the chance of drop and the power of it related to the level of the dungeon. It would keep some interest in it besides the whole "how far can i get".
So every level boss would have a chance to drop this kind of item (lets say 1/1000 at level 1 ) and the power of the item itself could be related to this?

Another posibility could be improved unique items (gold ones).

Well, with the upcoming 1.4 update that allows mobs to wear the items they're gonna drop, I'm not sure how I feel about this.

its the endless dungeon, so... its supossed to be a challenge .