A completely unrelated (and probably obnoxious) aside: technically wolves, coyotes and dogs are the same species. They can all interbreed and produce viable offspring. They've been classified differently because we like dogs, but we want to kill wolves and coyotes as vermin.

So, I guess your analogy would work if you said that Shakespeare is a dog (we love him!), Stoppard is a wolf (he may be dangerous, but he sure is cool!), and Hamlet fanfiction is a coyote (Damn vermin! Get me my shotgun...and a pie!)