I have been on both the Liberty and Glory this year. They are very comparable ships. The Liberty has the Wok, which the Glory doesn't have. Though I like this size ship, I too am disappointed that New Orleans didn't get a Dream class or larger ship. I enjoyed cruising the Dream from New Orleans.
We like to stay on deck 7 mid ship also. It was quieter on deck 7 aft as most of the kids running around late night didn’t come to the rear of the ship.