One person who does the analysis and the build
You get a business analyst who maps how the process runs today, decides which steps should stay with a person, and then builds what is left. The same person writes the diagnosis and has to make it work, so the diagnosis has to be honest. I have nineteen years of enterprise analysis behind me, at KPMG, E.SUN Bank, and Mercedes-Benz Mobility, and I am CBAP and PMP certified.