Ability to develop PostgreSQL scripts
Regarding the growing popularity of open source & free 'SQL programming language' - PostgreSQL, it will be required to support developing PostgreSQL scripts in Visual Studio who use .Net framework extensively for client end purpose, but opt out for Postgres as backend for minimizing license costs. There are VS extensions like NpgSQL, dotConnect etc. but I didn't find developing and saving PostgreSQL scripts in them.
So it would be better if there is an ability in Visual Studio to develop pgsql scripts, execute them against PostgreSQL server and build database packages.