On the Bungie forums, there are different ranks. Member, Heroic Member, Legendary Member, Mythic Member, ect. Notice anything? Heroic was the first map pack. Legendary the second. And Mythic the third. I see a pattern. What are the rest of the ranks? We can predict what the name of the next map pack will be!
and did you also notice the ranks here are named after Halo references? The ranks, such as Askar, Orpheus, Vanguard and such are all named after Halo achievements. and there are aslo Herioic Members and Legendary members. They're simply references. And what good does knowing the name of the map pack do?