A summary of my interpretation of the workflow thread is available on the wiki (http://wiki.cocoondev.org/Wiki.jsp?page=Workflow). Please verify my findings and I'm sorry if I misinterpreted something.
Thanks for your work, it is really appreciated!
Just FYI:
I've added an additional workflow solution and a section listing some interesting workflow standards.
Not all may be applicable for Cocoon, but they may provide some valuable input though.
Bye,
Andreas