It would have to be intelligently done,

True.

and it's difficult enough to find romantic comedies I'll watch without adding the complications of the fantastic.

I suppose that myself I tend to find romantic comedy unpalatable without the fantastic element.

I don't mean that I wouldn't love to see someone succeed, but I already avoid all the books whose authors have failed, and they are legion.

True. Well, there are many authors whose books have failed on all sorts of things.