These things can take a lot out of me sometimes. Christoffer and James earn respect and probably sympathy for triggering highly motivated position pieces, and with any luck their actual questions receive replies too.
I realized during editing that I didn't quite land the point regarding changing-up actions in Circle of Hands. The idea is that after character A's action, regardless of what the action turns out to be later, other characters can act upon what the player stated it looks like that character is doing. Their posture, their attention, their specific strong and weak points in a tactical sense, are all evident for everyone else to act with or upon, as well as plenty of other useful things like line-of-sight.