Albums with timeless sounds and song themes will most likely age the best and be the most appreciated in ten or twenty years' time. Stuff like Adele's 21.
If Gaga's career manages to take off again I imagine people labeling ARTPOP as the turning point of her career. Not really it being known for its quality, but more so for its story.
Maybe BEYONCE as well—it's tough to tell—perhaps none, really.