Consider the progression of the story and order in which the planets are unlocked. We have Earth, Moon, Venus, and then Mars. The level and difficulty of the planets scales accordingly. The Vault of Glass Raid takes place on Venus. It is safe to say that future raids will take place on the other planets. I believe that Destiny will make the Raids on Earth and the Moon easier than VoG, as a way for players who don't have the time or dedication to grind to 27+ to rank up their characters and attempt the more difficult raids. Thoughts?