I already voiced my opinion when it got data-mined early.
From what I saw on the PTR testing, my speculation on it being boring was confirmed. They spiced things up ever so slightly by moving some of the mechanics from the trash onto a mini-boss and giving the mini-boss more mechanics, but otherwise it looks very dull.
I’d like to see Blizzard add at least two more mini-bosses and ideally to change it to be able to choose TWO different stat buffs and having each dreadlord give 1% of each of the buffs you choose. Otherwise you always just take versatility to not die to boss mechanics and that’s super, super, SUPER sad.