Proposal: Kanban
The description mentions David Andreson, who applied Kanban method to software engineering. If this proposal is only about software development process management, then it is a subset of http://pm.stackexchange.com.
There might be an audience for a general "Lean Thinking" StackExchange site, targeted at people from different industries, who use advanced management methods to control and optimize their operations. People like managers, who have read and reread Liker's "The Toyota Way" many times.