My publishers are wonderful because they have let me write what I wanted to. They're wise enough to know that, with any author who's not simply writing formulas - who's trying to create something new - pressuring them to do something for market purposes almost always backfires. I can't imagine working under those circumstances, actually.
How a man perceives substance dictates the amount of substance in a man. To know the depth of anyone's true substance, simply measure the weight of what consumes and excites their inner drive.