Simply ignoring the events in GEN is a horrible idea IMO, and one I don't imagine Nimoy describing as a very, very good story, or however he is quoted. Also, to say that someone could go into the nexus to retrieve Kirk makes no sense based on dialog from the movie. Guinnan couldn't leave because she wasn't really there; she was an echo. Kirk was in there almost 100 years but didn't age, so why would his echo age almost 20 years since Kirk left with Picard? Time has no meaning there, we were told. It's way too messy and can only get messier.
The whole nexus plot was tenuous at best in GEN and it's probably best to leave it be. How could an energy ribbon that is so huge, devastating, and regular (it makes its way that close to Earth only every 39.2 years!!) be news to everyone from the Alpha Quadrant??? By at least the late 23rd century, it should've been studied, if not before the Enterprise-B incident then certainly afterward since it killed Kirk. Did none of the crew of the E-B and none of the El-Aurian survivors discuss the events and experiences of that day? The freaking media were there covering the entire incident!! By the late 24th century, all Starfleet officers should've been aware of it, yet Picard and crew are caught completely unawares.
This idea of ignoring Kirk's death is wholly inconsistent with all that we've heard about JJA staying true to canon. He has a lot of room to write a story that works within the history of Trek without ignoring a huge event such as the infamous James T. Kirk dying.
Also, I'm confused by the fact that the script is supposedly written already (per JJA and Nimoy) yet JJA is now saying that he's trying to think of a way to write Shatner as Kirk into the film. Shatner simply can't be in this film as James Kirk and shouldn't be in it as any other role including a Kirk ancestor. It will likely come across as forced and just plain silly, which I hope is not the direction he wants to take this project or the entire franchise. Other than this talk of getting him in as Kirk, I am very happy with all of the real news that has come out on this film and I wait in great anticipation for it.
I like Shatner but he screwed up by agreeing to be killed off in GEN. Shame on him. He allowed Berman to let us down. This situation is his own fault. Deal with it and focus on your hit show Boston Legal and the new game show.