I see your point and also see that many share it. I am personally conflicted because I personally enjoy a changing world where "you should've been there" is something that can be said. At the same time I am one of those people that are pretty damn upset we aren't allowed to replay The Red War, Curse of Osiris, Warmind, Forsaken, and Shadowkeep campaigns. There is a line to walk here that Bungie clearly isn't walking, or they are trying to walk and failing at it. I feel like ultimately the removal of the corridors of time is a good thing but I think things like the Saint-14 missions (where you save him) should be kept in the game after Season of Dawn goes away because of the significance of that story. I don't have an answer I guess but definitely sympathize with you even if I may disagree regarding this one specific place going away.