Sad really though that they can't at least let you script in .net languages.
I suppose there are some trusted/untrusted code issues to resolve.
Postgres has had extensions for other languages for ages. http://www.postgresql.org/docs/current/interactive/external-pl.html
Perl, Python, Tcl are built in as well as the pl/pgsql language, and others have added support for other languages, all done via a C interface. I'd love to see a bit of Iron Python in SSDT personally. In fact more love from the core visual studio team for database & BI projects generally. Sometimes it just feels like we're the poor cousins. The MDX calculations screen for example, is primitive compared to the level of debugging available to "real" .net projects.
Maybe in SQL Server 2017?