Have you had a look at Scott Colestock blog on BizTalk naming conventions? See:
http://www.traceofthought.net/PermaLink,guid,c721d9a7-d518-47b5-a2ce-0ce1cbfa7bd0.aspx
If there is actual code deveoped, such as custom pipeline component code or custom fuctiod code then that can be reviewed against your companies speicific language language conventions. Microsoft and Scott provide a very good start fro defining a companies BizTalk conventions.