Most of the "professional reviewers" didn't even play Vault of Glass. The content in the Grimoire is fantastic and its a crime that stuff isn't in the game. Chris Butcher gave an interesting talk at GDC, where he outlined the pitfalls they encountered when building the Tiger Engine. It took a year and a half longer than they expected. It's clear that Destiny has been a learning experience for Bungie, but I think sometimes they rely to much on the data they collect. I think you can tell a story too fast or too slowly and Destiny is definitely too slow. I think they have great opportunity to redeem themselves with House of Wolves. I love Destiny, still enjoy playing it almost everyday and can't wait for more.