Congratulations. This is also a starting point as there will be users for the factory and they will give feedback and propose changes based on their particular needs. Have you consider how to maintain the language with the users, update models made so far to meet the DSL changes etc.?

sorry for the late response, I was on holiday :-). Just to make clear Service Factory isn't the same as the DSL I was writing about. Although they both handle the same topic: Service Design. we stopped working on the DSL for sometime because we wanted to wait for the new release of the DSL Tools (which are available right now).