Here's a cute data point, for what it's worth. I spent most of the day today testing some Battlebond tech @Aelien . We weren't explicitly trying to react to this thread, but our results are probably relevant to the discussion
The Mind Twist was very good for me, and the Duress effects were very good for Aelien. At no point were either of us sad to be running those cards. I think these cards are still quite good against Combo, reasonably good against Slow Control, fine against Tempo Control, and bad against Workshops and Dredge. I think what one does with a Duress is so different than what one does with a Mind Twist that you have very different requirements for wanting them, and I think what one does with Hymn to Tourach is just something no Vintage deck wants.
Ultimately I think if you're just looking at playing one of Ravager Shops/Jeskai Mentor/Esper Outcome/Inferno Oath/Dredge, in a field that consists mostly of Ravager Shops/Jeskai Mentor/Esper Outcome/Inferno Oath/Dredge, discard effects just aren't the best option over alternatives (with the exception of Cabal Therapy, possibly Unmask out of Dredge decks). That's going to include most players in most metagames ... but I do think there are reasonable decks outside that list, and reasonable metagames that diverge from that list, in which Duress/Thoughtseize/Mind Twist are good choices. Hymn to Tourach, I think, won't make the cut in anything reasonable, and I can't think of any other discard effects that are particularly notable.