Question : Building pluggable Goals

[mohitpali]

I am exploring building a pluggable Goal and a Cache/Listener to have a BrokerGroup Information. I notice that there are multiple pluggable interfaces e.g. Provisioner. Goal is an interface as well and I am wondering if it would be good to have all the pluggable interfaces into a separate module so that Plug-ins can implement the interface and not have dependency on the whole cruise-control package.

What would you suggest as the best way to achieve this ?