When you reference an action today via jboss-esb.xml, you get to specify two things:
1) The name of the method that will be invoked.
2) The name of the action itself.
#1 gives you the flexibility to call into any method on the action class and #2 gives you the ability to name the action whatever you want. I guess I don't see the case that's not covered here. If we're missing an important case, could you give a concrete example?