I'm sorry to burst your bubble but I've had all 4 and I can tell you for a fact there isn't a single thing that the old consoles do better than the new ones. The only reason you would tell yourself they are better is if you can't afford to buy a new one, which is fine of course, but be under no illusions, the previous gen are in no way at all as good as current gen. All that being said I do actually think since Destiny up to this point has been on last gen consoles there is no reason at all why this expansion shouldn't be. Unfortunately I think what we are seeing here is Activision trying to squeeze every penny out of the game (due to low sales vs development time on old consoles). Destiny 2 absolutely develop it from the start for exclusive use on current gen, but since Destiny is already cross gen compatible this is just bad business and "misering" from Activision.