This is tricky, because if we don't understand (on the technical level) how "qualia" work, we cannot be sure if we are breeding for "less suffering" or merely "less ability to express suffering".
In other words, now the humans could play the role of the unfriendly AI who "would rip off your face, wire it into a permanent smile, and start xeroxing".
I'm not certain if we need to understand how suffering works if we can simply remove the organs that house it.
It seems less tricky when a technological set of solutions come along that allow delicious engineered meat to be grown without all the unnecessary and un-delicious bits.
I think the in vitro meat industry will have an extraordinarily good time when things develop to the point of being able to synthesis a lazy-person's whole stuffed camel.
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