Really enjoyed reading this! I appreciate the update to the manip guide because I've felt that there's a lot of stuff I disagree with in there as well now, especially in regards to grabbing.
I would be interested to hear more about your concept of "form", as it's a term that I'm not at all familiar with. It may be a well understood term these days, I wouldn't know. I get the concept of planning your moves and pre-moving joints to get them in optimal positions, but I actually never really thought about aligning my core as something to aim for when I make replays. Is this a utilitarian method for getting the most speed/power? I assume form can be compromised for the purposes of style?
The video example for this section is very cool and is the kind of thing I wished more people thought about back in my day, so I'm glad that it's part of the conversation nowadays!