I just remembered implications I had thought about- I had thought about this when Year of Hell first aired. What if what Annorax had been doing did not only change the "Before and After timeline", but altered the events of other episodes. In other words, is it possible that there were other episodes prior to Year of Hell never happened or happened differently from Janeway and Co. (at the end of Endgame) point of view than what we viewers saw?
Yes, it has occurred to me that everything we saw is the result of Janeway ramming Annorax's ship. But then we wouldn't have seen Before and After...
That's the sort of thing I think about. I have a love/hate relationship with Time Travel episodes. Hate because they usually wind up with a reset button but at the same time I like to speculate about how things could have turned out differently in another timeline.