<p>Personally, I don't really have a problem with it, BUT...I think that if she's going to need to create a new timeline for McGonagell or the Dumbledores, I'd say she needs to basically completely re-do the Timeline, because otherwise it might not make sense, however, she is the writer, not us, we cannot control her(Though we can have our opinions), and in the end it's HER decision, not ours</p>