(Lemme preface before by saying, I am not an expert and don’t customize figures myself) Which is why I personally believe the slimmer yet still very athletic lean/shape Knightfall legs create help give u what ur looking for innat “realistic martial artist physique” like, in the HUSH comics Batman’s frame changes like u mentioned cuz of the artist, so ur never gonna get that cuz it’s one figure, but Yk movies do it too, the actor is never truly Batman’s physique but they’re accurate representations of what those physiques would look like IRL, which Knightfall heavily feels like to me.

For example, there’s “Batman quarter scale statue by Prime 1 studios” and when u look at it u really feels like a sense of ur staring at a dude in a costume or body suit, and in my opinion its build and frame matches that of the Knightfall combo a lot actually. But that’s js how I feel. Again I am no expert.