The problem with "which license will lead to the largest and most viable ecosystem of free software" is that it's the wrong question to ask, because the perspective is too narrow. What matters most IMHO is which option will lead to longest and most viable ecosystem of satisfied engineers. If you take this perspective of satisfied people instead of an ...

IOW, I suggest such a system simply moves the problem from answering virtually the same question over and over to the problem of which level to ask a question at. Perhaps, in the name of progress, a step forward, or perhaps not.