For the past decade, Seyfarth, Shaw LLP has been designing processes that help its lawyers handle legal matters as efficiently as possible. Now it wants to sell that expertise to law departments, and Rob Saccone is the CEO — not the lawyer — who will lead that charge. SeyfarthLean Consulting LLC (SLC), a wholly owned subsidiary of the 800-plus lawyer firm that uses Lean Six Sigma business principles to streamline legal matters, is now being led by Saccone, a Seyfarth, Shaw newcomer based in Boston who …