I would rather all bosses give upgrades, scaling up with Edda giving 2+/2+, as the current reward set gives a high amount of exp or Lore tomes for the amount of work put forth for every round.

I had to do about 4 full runs, and 5 partials ranging from 10 to 30 floors for my only Padjali weapon as the RNG was cruel. Despite that, it's such easy content that I can quickly hop in on any role that I didn't mind doing it. I capped lore for the first time in there.