Writing popular fiction can be a dangerous art. Keep too close to a successful formula, and you risk becoming stale and predictable, and eventually less popular. Stray from what you typically do and you risk losing your audience even faster than by going stale.
In writing his ninth James Bond novel, Ian Fleming went with option #2. He soon regretted it.
Both his regular readers and many critics were put off by a Bond book where 007 himself only appears in the last third. Who is this Vivienne Michel and why the concentration on the sordid details of her love life? And where did all the globetrotting spy stuff go?