MORE SPOILER TALK! Taking a moment to go all geeky, I don't see how this is an alternate time line rather than a complete destruction of the original one. If it is not complete destruction of the original one, then why were Picard and Co, so desperate to "correct" what the Borg had done in First contact. If all they are doing is creating an alternate universe, then this would not affect Picards Federation at all. Likewise in the Guardian of forever episode of TOS, McCoy's saving of Edith Keeler completely destroys Kirks original timeline and has to be corrected. The times it has been shown that travelling to the past and altering it, directly affects the timeline of the time traveller in the Star Trek universe are numerous. Which means that the original Enterprise, Ds9, Picard........ They are all Gone!