I shook my head when I first saw this. Still am. While the technology is available, the design would be a complete failure.
The biggest problem, is the gravity deck. You just can't build one parallel to the plane of thrust, which is what they are proposing. All serious designs for spacecraft have the gravity deck perpendicular to the plane of thrust because of the issues involved with maneuvering and using the wheel. You cannot use both the gravity deck and maneuver at the same time. Especially with a parallel design. You'll create a variable gravitational effect, which is not good for the people on the ship, nor the machinery involved in making the wheel move. The size of the gravity deck is good, larger decks mean its easier to create larger gravitation effects without the vertigo problem of moving people too fast. But a large portion of the central saucer would be uninhabitable because you are moving faster the closer you get to the center of the deck. Now, cargo could be placed in the central area, water for example, something that doesn't need to have physical access. But you still have the problem of maneuvers. Anytime that the ship is expending thrust, the gravity deck must be offline, for a perpendicular arrangement, that's not a problem, most rooms on a perpendicular grav deck would be arranged so that they can have two "floors" and what can't be arranged as such would be bolted to the deck. For a parallel arrangement, a portion of the ship will be turned on its head every time. Remember, Inertial Dampeners haven't been invented yet, so every time you apply a thrust in one direction, everything on the ship is pushed against the thrust. Could you imagine what it would be like to be directly on the bow of the ship, when the helmsman decided we needed a two minute maneuver?
The problem stems from trying to build something that resembles a design that is not to be in the design phase for another 200 years, the design has technology that we can only dream about, although those dreams are allowing us to start work on prototypes of the technology that may one day allow us to build an actual Enterprise. It's just not possible today. Not with this design.