Completely agree. In addition to the large space I'd also callout the ability to use your shoulder, elbow, etc. (rather than relying on fine movements) as an in

Completely agree. In addition to the large space I'd also callout the ability to use your shoulder, elbow, etc. (rather than relying on fine movements) as an ingredient toward achieving, let's call it, a "frictionless" creation/brainstorming experience. The comfort of using an instantly-intuitive tool like a whiteboard allows the thoughts to pour out as fast as you can move your hand.