The neglected leadership role is designer of the ship: designing the governing ideas of purpose, vision and core values first, then policies, strategies and structures, and above all the learning processes through which people deal with critical issues and develop mastery in the disciplines; good design dissolves problems before they arise and integrates the disciplines rather than relying on one.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.