If you look at the history of Destiny story launches going back to the original game, the Vex have gotten the short end of the stick compared to the other enemies. Between story, content and mistakes by Bungie, they haven't received the same attention. Just look at the launches: Destiny 1 - All races... but sorta the Vex with Black Garden & Vault of Glass. But vanilla D1 had issues The Dark Below - Hive House of Wolves - Fallen The Taken King - Taken/Hive... and a touch of Cabal mixed in Rise of Iron - Fallen/Siva Destiny 2 - Cabal Curse of Osiris - Vex............ and was easily the lowest point of the Destiny franchise during those days Warmind - Hive, and a Cabal raid Forsaken - Scorn & Taken Black Armory - Fallen Joker's Wild - .......???........ Taken I guess? Reckoning & Gambit Prime had Taken final bosses Penumbra - Calus, with Vex & Hive in Menagerie & Hive in the raid Shadowkeep - Hive focus, possibly a Vex raid in the Black Garden? So when you look at the list, Vex show up 3 times: Vanilla Destiny, Curse of Osiris and a small part in the Menagerie. D1 suffered from content & identity issues, although the VoG was by far the best part. Curse of Osiris had content & identity issues, and Argos was a pretty good raid lair. So the Vex are due. Hopefully they get an awesome story, great content and time traveling raid!