I wrote:
> My thought here is that there is not a lot you can do in v17: it's
> been out for a year and we dare not destabilize it. Take the easy
> near-guaranteed win and be happy. Additional improvements can be
> pursued at our leisure in the master branch.
Also, the calendar is a factor here: we are only a week away from
release freeze for the August releases. Even if you're feeling
optimistic about what we could risk in v17 with some development
effort, I'd counsel first working on a minimal patch that would
be safe to apply on short notice, so we can get the easy win
in this release cycle.
regards, tom lane