Read this. Negate virtually every sentence and you will have my view.
Read this. Here, I agree on virtually everything. One thing I'd add is that the DSL is a virtual language - it consists of your base language (like bpel AND all of the services (nouns and verbs) in your enterprise vocabulary. In a manufacturing company, your verbs and nouns will relate to purchasing, picking, packing, shipping, etc. Late binding, loose coupling, interoperable schemas, etc. all create a new meaning for the domain specific language. After you pick a first order DSL, you will spend the next decade creating your second order DSL (the enterprise vocabulary).