I would like to propose a switch of the order of DEPENDs in virtual/pkgconfig to make dev-util/pkgconf[pkg-config] the default choice for new installations.
dev-util/pkgconf has less external dependencies, is lighter and is faster than dev-util/pkgconfig while being now 100% compatible This switch has already been made by Funtoo, Alpine Linux and FreeBSD with very little in the way of ill effects recently from any of those 3 camps. There are no more pending bugs against pkgconf (and Diego did a tinderbox run with it a while back) in Gentoo. pkgconf also has a upstream that is more than happy to work with us specifically (or anyone for that matter) and I (a Gentoo developer) am one of the upstream developers. If this is approved, I will make the change in ~2 weeks. I'm not planning on making a news item because users should notice little difference. Thanks Jeff