Ran into one of the most annoying issues with removing Adventures from Brother Vance's inventory trying to complete my Trials of the Nine quest line. Where you had to kill 9 Vex, 9 Cabal, and 9 Hive on Mercury. Hive only spawn on Mercury during the Bug in the System Adventure and the Omega story mission, very rarely do they spawn at any other time meaning anyone could be waiting weeks for either Mercury to become the flashpoint or for Omega to become one Heroic Story mission like it was today. Why remove Adventures from planetary vendor inventories? There's no reason for it except to push the new content, what if someone wants to do the old content for the lols. Same for Amanda and the old campaigns, what if someone wants to run through the old stuff for fun using insane loadouts like triple shotgun or triple sniper, or dual sidearms throughout. Have the option to pick up adventures from planetary vendors and reactivate the campaigns Red War, Curse, and Warmind from Amanda, Forsaken from either Spider or Petra, and Shadowkeep from Eris.