I've gained a new appreciation for lowbrow in middle age. I'm still enough of a snob to gravitate toward "brilliant" lowbrow as opposed to "despicable" in New York magazine's approval matrix, but give me one more decade. My tastes should be off the chart.
Does durability, for example, constitute an important definition of what is or becomes a literary novel? How does a novel become a classic? Who determines what becomes a classic?