VoG is so much more interesting and reliant on teamwork, in my opinion. The Vault's still fun, but the Crota hallway was uninteresting after the first week. It's literally a series of hallways. And even when it's almost out in the open, you move point to point or across a bridge. Then you turn right and fight Crota. To each their own, though. As far as I can tell, the majority of Destiny players prefer VoG to CE because it's a better-designed, more varied set of encounters and spaces. VoG: Opening the door with teamwork, platforming to the confluxes, defending the confluxes, covering oracles and your buddies' asses, facing the templar and waves of harpies, platforming down to the Gorgon cave, navigating the Gorgon cave, platforming to the vault, time-traveling to get the relic while holding open a portal, holding the conflux, and finally facing Atheon as a randomly split team. CE: Stand on platform, cross bridge, fall, run, defend, cross bridge, run through hallway, defend, cross bridge, defend, run through hallway, fall, face Ir-Yût (pretty cool encounter, actually), defend, stand on platform, face Crota. If you can describe something in a game primarily using the words "run, bridge, fall, defend," and "hallway" there's not all that much going on.