I know that was the reasoning for the Records/Tuples proposal being shot down. I haven't dug too deeply into the pipeline operators other than to get a feel for both proposals.

Most of the more interesting proposals tend to languish these days. When you look at everything that's advanced to Stage 3-4, it's like. "ok, I'm certain this has some amazing perf bump for some feature I don't even use... but do I really care?"