[zozbot234]

Parent comment is absolutely right that FDW as a general query router is still under heavy development. It's very likely that we'll see further improvement in forthcoming Postgres releases, which will come with additional benefits since FDW are used for a lot more than just "high-level" query routing in Postgres.

[gavinray]

This would be great.

I know that EnterpriseDB is heavily invested in FDW development and core Postgres stuff, so maybe we'll see some more neat stuff come out of that team that makes it upstream.