I remembered reading a thread on the hackers mailing list about this starting probably 6 or 7 years ago... Nothing ever came of it if I remember right.

Found it: https://www.postgresql.org/message-id/flat/7f70bd5a-5d16-e05...

I just did some more digging, and it looks like there has been some more recent discussion in a different thread about the same topic though: https://www.postgresql.org/message-id/flat/567ED6CA.2040504%...