I've sat and chilled on the large 'bench' thing in front of the gallery many times, and watched - most days I was there i could count the number of people using the shooting arcade on one hand in 30 minutes. It seems to be one of those things people 'miss' only after it's gone, but when it was there, nobody used it.
As a
DVC lounge, that place will be much more crowded all day, guaranteed. And Disney can probably justify it even having some monetization value, if just one or two people a day decide that they want to buy into DVC when they see the entitled enjoying their new space.
I've got an interesting idea to pitch Disney - expand it to use up all that frontal space right up to the construction wall, all the way back to the Adventureland side, and make it 2 stories with a covered roof viewing deck for parades and such. That should really get the hoi polloi jealous (and make getting into the lounge for DVC members during parade times about as bad as the most popular new ride!)