Okay, I'm missing the logic here. If you are creating more complete decks of this rare OOP deck by sacrificing one deck I don't see the problem.
No-one has a broken Sangreal that I have ever heard of. We are not talking about some fairly recently printed deck with loads of owners with a card missing - not that even that would make it OK.
And if someone had a complete Cary Yale, with all those missing cards, it would still be positively criminal to break THAT set to complete the one in the museum. A complete work is just that -
complete. Sell it WHOLE, to someone who will appreciate it as the complete work that it is.
What about cutting up a painting - that's something you can grasp, perhaps ? I'd (seriously) rather like the bottom right hand corner of a painting I saw in Venice - but I wasn't that keen on the rest of it. Would that be OK, as it would make me so happy ?
I'm not that happy to see single cards from the Rock and Roll sold - and they aren't sold to complete anything, just because people fancy a tarot pic of Joni Mitchell or something. The deck is a lovely one which was created as an entity, and was never meant to grace people's mantelpieces in bits. I often wonder how Paradis feels abut it.
Philistinism at its worst. Come here and beg in the broken decks thread; that's as far as I would EVER take it. Those decks are not rare, and are already incomplete.