Ron is a difficult character at times in JKR's universe, so I can accept that he is like Percy, a character that is subject to his weaknesses and has to pay for them. That Ginny and Hermione are lovers is a great twist, as well as being mothers to Harry and Draco's children. It is funny to think that both these young ladies are much like Harry and Draco. I predict they will squabble as much as the boys do. I am not sure that Narcissa would prefer Ginny over Hermione, since Narcissa is Ravenclaw and values intelligence, like Hermione's, very highly. Lucius might prefer Ginny, but would yield to his wife in such matters. IMO