The idea was rather intriguing, however I haven't ran into perf issues in clients yet where this would be beneficial.It does sort of negate one of the benefits

The idea was rather intriguing, however I haven't ran into perf issues in clients yet where this would be beneficial.It does sort of negate one of the benefits of the spec, which is human-readable static queries. It did very much feel like prepared statements. There was even talk of some implementations of predefined queries as a mechanism to whitelist queries, which was interesting. I hope we'll see more about this as projects grow and eventually need it.