if the only dungeon you have to run to get everything you want is abysses, regardless of how difficult the dungeon that’s supposed to be dropping the rare items, then clearly you’re doing something wrong with your game. trading isn’t a part of the gameplay loop either, it wasn’t even a part of the game until people tried their hardest to trade with each other anyway, and then complained about getting scammed since drop trades are far from secure.
if you want an item that drops from dungeon X, you should have to do dungeon X. not dungeons Y, Z, A, C, T, and N.