I'll be around today if anyone is keen?
I'm at work, but I did want to mention that I knocked out that 25x Thrall item bounty with the fusion rifle yesterday. The drop rate for the quest item felt to be around the 66% mark, so it took 2 full clears and change on the ezmode version. Next up, meleeing Cursed Thrall without dying. Fun.
They didn't for me. The easiest way I found to do it was to run Chamber of Night on normal. There's a bunch of waves you kill at the end so you can just kill everything but the Cursed Thralls and then take care of them one at a time. Bring a white weapon so you can kneecap one if they're too close together.