HotRod said:
I dunno...Seems a good way to start afresh, and keep all the Trekkies happy about not messing with what's already been told!!

Yes, if this was not Star Trek and I think even non-Fans like the Smart factor in Star Trek. Now, a person does not really have to think deep to see the errors in what Bob Orci is talking about. Trek-fan like most sci-fi fans are smarter then most people and in time I think they will rip Bob Orci's bad alternate timeline universe ideas apart.
one thing that pops out is:

You have two universes-
1.) The Trek A Universe which is the Universe of all past Trek (TOS, TNG,DS9, VOY, ENT and the past 10 movies).

2.) The Trek B Universe which is the JJ Abrams Star Trek Universe.

Now, Nero is not really travels back in time in the Trek A Universe time-line. Nero is leaves the Trek A Universe and goes to the Trek B Universe. Trek B Universe is an alternate timeline which was made by own Nero actions. If Elder Spock leaves Trek A Universe to stop Nero actions in Trek B Universe then Elder Spock is damaging the time-line of Trek B Universe which was made by Nero actions. This is some thing that a character like the Elder Spock would think of. Also a character like the Elder Spock would know about the Many Worlds theory. The Many Worlds theory is the theory that anything thing we do, there are alternate action Universes and there uncountable alternate action Universes. Trek B Universe would just be one other alternate action Universes. The Elder Spock going to Trek B Universe and stopping Nero would be like going to the Mirror Universe and changing the history. A character like The Elder Spock would know that traveling to Trek B Universe is a bad idea, specially seeing like Bob Orci said that his own Trek A Universe continues normally.