Add the ability to implement services using Drools. I'm on the fence about what the implementation should be named. We could go with "implementation.drools", but that doesn't sit right with me. I don't think "implementation.rules" is perfect, but it is better. In terms of feature set, I would be happy with an initial implementation that was feature equivalent to the BRP in JBoss ESB 4.x - i.e. stick messages into a knowledge session and crank on them.