For better or worse, there is as yet no definitive "radical middle" (aka "planetary humanist," "third wave," etc.) political manifesto.
It sounds like I may have an opening. I find myself selfishly hoping they don't know what they're doing, so my ideas can have a chance. However, I find myself having to eat my own dog food of humility, as clearly a lot of what I thought was original has already been done, and in some cases at least done better.