It goes beyond just PoE and ToO. It's about fixing the mess that was TDB. They finally are starting to make changes that make sense (uses for npcs, weapon reforging, new weapon class, new weapon talents, minimizing all these stupid currencies, crafting bosses that are more than just bullet sponges that actually have somewhat creative mechanics, showing pvp players some love, etc... For that reason I gave it a B. Just the content itself was a C/D, but the general way that the game is headed is very promising and they went a long ways towards making Destiny a better game in the future.