Fun Fact: The Vex haven't been the focus of an annual release since D1 Vanilla

Just something I noticed. You could make a case for Shadowkeep since they were the raid for that expansion, but I feel like the Darkness itself was the main focus of that expansions plot. Out of the original four enemy factions the Fallen, Hive and Cabal have been the major focus of at least 2 expansions.

• D1 Vanilla: Vex
• The Taken King: Hive/Taken
• Rise of Iron: Fallen
• D2 Vanilla: Cabal
• Forsaken: Scorn/Taken
• Shadowkeep: Hive/Darkness
• Beyond Light: Fallen
• The Witch Queen: Hive
• Lightfall: Cabal
• The Final Shape: The Witness

Vesper's Host hinted at some Vex stuff so hopefully they can be the focus of a future main expansion. I think it was a shame that Panoptes and Mercury were used in Curse of Osiris, I think that could've carried a major Vex annual release.