Hi Bruno,
I posted a couple of ideas to the Google group in the past, and we're using JIRA for issue tracking, so I expect that feature requests will also end up there. But it might be good to also have a roadmap on the project's web site. If you are serious about contributing: I'm happy to take more people aboard, also as committers. This is just to say that - if you really care - there is a fair chance that I could you involved more deeply.
Meanwhile, I figure that if you have some feature requests, you post those to the Google group.
Wilfred