I saw this show last Sunday, and I had some issues with it. I loved the idea, but there seemed to be a serious disconnect at times between the deaf and hearing actors playing the same role. In particular, the two Moritz' seemed to offer two distinct portrayals of the character, with the hearing actor vocalizing an intense need and urgency in everything he said while the deaf actor didn't have that same focus. Both portrayals were perfectly valid, but having both of them attached to the same character at the same time was confusing to me. It almost seemed like the two Moritz' were struggling to communicate, which may have been a powerful underscore to the themes of the musical if not for how clear it seemed to me that this was not intentional (mainly, how much it interfered with understanding the character, at least coming from an audience member who hasn't seen the show before).
As a side note, I sat in the rear mezzanine. Don't do that. If you're going to spend money on this show, you have to spring for the orchestra - you simply must see facial expressions on the deaf actors/actresses faces. I feel like I missed out on a lot not being able to do that.
BROADWAY: The Cripple of Inishmaan, This is Our Youth, If/Then, Hedwig and the Angry Inch (x3), Cabaret (x2), The Real Thing, A Gentleman's Guide to Love and Murder, Chicago, Les Miserables (x2) Disgraced, Finding Neverland, On the Twentieth Century, Wolf Hall Part I, On the Town, Fun Home; TOURING: Jekyll and Hyde, The Book of Mormon; LOCAL: The Twilight Zone, Anne Boleyn, Death and the Maiden, The Lying Kind, Chorus Line, Stupid F**king Bird