We already are to some extent, since pg_dump will dump its comment and privileges, which it would not do for any other predefined object. I think this is actually an implementation artifact rather than something that was explicitly intended at the time, but since no one has complained about it, it's probably a good thing ;-)
Does that mean your in favour of dumping a DROP SCHEMA public; command if they have dropped their public schema? It's definitely not worth doing it for any other "system" object due to upwards compatibility of the dump files...
Chris
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