For the honest but somewhat sad answer about PITS.
Since a real 4-eyes workflow could be handled by custom workflow I was under the assumption that it would be easy to integrate this into the SE workflow options.
But this does not seem to be true since you are not even planning to include it. I would have thought SF would be 70% less coding for you doing the core as well :-)
Looking forward to the long awaited Q1 release.
Once again many thanks for your honesty.