lets broaden this. Any "end game" activity should in no way drop sunset gear, and currently outside the raids, they all can.
Ordeal Grand Master - Run the corrupted, final chest drops the Horrros Least, which is sunset, at minimum re-issue the NF loot like you did with Gnawing Hunger.
Dungeons - All of the ones you can play (prophecy is not in game at this time) drop sunset loot, Pit drops fully masterworked sunset armor, at that point just replace it with some MW cores and crystals. Really the DC and Moon loot should all be re-issued so the drops are not sunset from end game things. If LW is end game so is Throne.
PvP and Gambit - loot dropped in matches and from rank ups and resets should either be reissued or changed these are mixed but there are sunset items in these. Comp is a end game activity and resets to Valor have the same issue.
While not fully end game it was at launch a near endgame activity, Altar of Sorrow on the moon should have i...