I hadn't really considered the manna to be the opposite of a handstand before. That was a really interesting concept. i'm restructuring my workouts now with that idea in mind
One thing i felt as i read it and i've also always had issues with is classifying the back lever. it definately makes sense that it's a flexion, but then then it seems strange to call it a pull. but then again, manna is considered extension and it is more like a push than a pull. i guess once you go behind the back, a push is a pull and a pull is a push.
what about bridge work?