While not having packages isn't a huge deal for new projects, it can be a pretty huge stumbling block for dbas who want to migrate from Oracle to Postgres, but

While not having packages isn't a huge deal for new projects, it can be a pretty huge stumbling block for dbas who want to migrate from Oracle to Postgres, but need an easy way to port their pl/sql code to pgpl/sql. Most of the syntactic differenes (like pgplqsl code needing to be delimited as a string) can be automated, or handed off to a junior programmer. Not being able to use Oracle's package system would require some major refactoring to how you organize your functions and procedures