Everything about Project Pie was a positive experience. The crust reminded me of California Pizza Kitchen more than a NY-style. I liked seeing them make the custom pizzas to order; we enjoyed our pizzas (meat lovers and white), and our dessert pizza, the "Black and White". The fact that they have Coca-Cola is awesome; that's harder to find on an MGM property than a single-zero roulette wheel! I do worry that the line could get long very quick with the abundant options slowing folks down, but we were there off-peak hours.
It's a 4.5 star place, but I rounded down because faced with a choice we would return to Secret Pizza (at Cosmopolitan) over this. If it wasn't Las Vegas which has abundant delicious options, would be a definite 5.