PostgreSQL 9.6 Wish List

First, a huge congratulations and thank you to the PostgreSQL Global Development Group for shipping such great features in 9.5!

I'm teaching myself C (I'm a Java guy) so that I can contribute down the road. 

Here's what I'd love to see in 9.6:

• Okapi BM-25 as the default relevance measure for text search. SQLite has it, so it should be doable for Postgres. 
• Overall, make text search a little more Solr-like (n-grams and such)
• Allow custom, non-C functions (like PLV8) for text search parsing, so I can write my own parser
• Allow parameters for SET ROLE ? and LISTEN ? so it's a bit safer to call them from a web application
• Security cookie for SET ROLE, so that user cannot switch roles without permission. See this post for more info.
• Async LISTEN/NOTIFY in the default JDBC driver.  pgjdbc-ng has it, so it should be doable.

Nice To Have:

• Kill MD5 forever and use bcrypt or scrypt for password hashing
• Raise an exception if an identifier is longer than 63 characters, instead of silently truncating it. This was an actual issue with Drupal Commerce
• Begin SQL:2011 Temporal feature set