You said that watching the performace helps us to see Hamlet's perconality, and I completely agree. The way Hamlet is acted out in this clip, is completely different than I had pictured in my head. By watching, I can see how the actor and production company thought he should be portrayed. It's always good to see the play through many lenses.
I think the visual cues also help us understand some of the lines that may be more complicated, or that we might skim over because they are hard to grasp. For example, 3.2.85-86 says, "Excellent, i'faith, of the chameleon's dish. I eat the air, promise-crammed. You cannot feed capons so" (Hamlet). I would not have hung on this line when reading the play, because it's short and if I don't understand it,
I think the visual cues also help us understand some of the lines that may be more complicated, or that we might skim over because they are hard to grasp. For example, 3.2.85-86 says, "Excellent, i'faith, of the chameleon's dish. I eat the air, promise-crammed. You cannot feed capons so" (Hamlet). I would not have hung on this line when reading the play, because it's short and if I don't understand it,