I wonder if it really spoils a reader's enjoyment when (s)he gets to know that everything will end well in the book (s)he is reading. No details. Just "it will be ok". Personally I don't like pure happy-end stories and would prefer not to waste my time on them. Of course, some of them are great, but life is both sorrowful and beautiful. So, I'd need the "happy end" parameter in FM. It would be great if somebody else could share an opinion on this question.