Disagree with these points.
Look at Collingwood, they have moved away from that slow ball movement, kicking game with outstanding results. Geelong similar, but not to the same level.
GWS under Kingsley, similar. Slow kicking game under Cameron. Opposite under Kingsley. Look at their recruitment under Kingsley. All about leg speed.
Speed is still king, both in ball movement and leg speed. You need to take risks and put the opposition under pressure.
Safe football is the road to nowhere more than ever.
Good thing is, we are the original kings of quick movement ball in hand. It's ingrained. Sounds like Yze will "just" tweak it to involve a better balance between kicking and leg speed.