Hello,
I recently gave on irc a full description of the plugin. The ain idea is to allows the creation of queues ove a barrel database. As for an example on how it could works, here is the code done long time agao to subscribe on changes using zmq over rcouch:
To extend this sile feature it would be very useful to allows a user to design the way we want to creates feeds based on a barrel database, such thing.
About your question "how do i need to give my proposal " you can have a look there:
If you have more question join us on the forum:
https://users.barrel-db.org of #barreldb irc on freenode :) I am traveling today but will be available tomorrow.
- benoit