Sophistication and the mainstream do not go well together.
Right now, all you’ve got is a skeleton. Give it some flesh, a heart, and see what you end up with. It’s bloody hard to love a skeleton.
So a writer who knows what she is doing can write mainstream, and often does.
But different contexts call for different advice, and since writing is all about mastery of control, anyway, it makes sense that we wouldn't want to veer too far into the abyss either way.
103,648 Literary Works • 548,787 Reviews