Pardon my ignorance but does Disney have another Italian restaurant that is not inside of a park?
I know there is a ton of Italian places within the parks, but we have to consider the Boardwalk for what it is. Boardwalk offers Dining Plan options as well as Walk Up Dining without necessarily requiring a valid park admission.
I think there may be an Italian place at DTD, but am not sure any of the Resorts offer Italian.
Personally I was hoping for something unique and creative to keep with the Boardwalk Theme. Maybe some type of traditional American fair, or a catch-all restaurant, with a live brass band. The Dance Hall is a glorious waste of space, but if you had a dinner spot that appeals to the masses with the menu and offered some live music, swing dancing, and wait staff/musicians in period clothing I think that would be a big hit.
I also always thought Big River would be better if it was more of a "speak easy" setting that could catch the Epcot crowd who enjoys drinking around the world or doing the festivals. Once Epcot closes at 9 or 10:00 like most nights they can wander to the speak easy to keep the party going.