There are many other re-usable components and tools within the ESB Toolkit that are really helpful during the design, development, and operation of our ESB, as well as components that could be easily re-used in other non-ESB implementations, such as certain pipeline components and libraries. One example of those are the Add/Remove Namespace pipeline components.
Those could come in handy in many BizTalk solutions where we need to deal with systems that are not that careful with how they set the namespaces on the messages submitted to BizTalk. We can use them to:
Add a namespace when the incoming message doesn't have a root namespace
Replace the incoming root namespace when the difference between the external system schema and our canonical schemas just differ in their namespace (so we could avoid the implementation and execution of a ridiculously simple map)
When the type of the inbound message is defined by some data included within the message itself
