Unfortunately, that only works for a few mobs. Once you've defeated a boss, it doesn't do anything, and if you go too high, then you're stuck waiting for your own respawn timer, which is far longer. (And you get no loot during taunt)
It's also frustrating how far back it feels like this update has pushed us. I was ALMOST to being able to equip 9 items at once, and now I'm stuck at 4 with no possible upgrades to raise it any. Right now, I feel like I can't equip anything worth using because the negatives on items are too strong and there's not enough slots to balance them anymore. Whether it's from the loss of relics or the loss of heirlooms (since I lost both). Whatever it is has made this section much more frustrating to play, and it was the part I actually enjoyed.