Reasonable explanations for the difference from the original canon, but this is something I think Trek has lost, and not just the new movie, but Enterprise, TNG, Voyager, etc.
In TOS Trek, The Enterprise was a ship with history- she wasn't brand new, or the namesake of her class, or anything else. She had two prior captains and been in the fleet...what? about 20 years before Kirk ever took command? It gave the ship a sense of being a 'grand old lady' and a ship with a good reputation around Starfleet.
Ever since then, Trek has always seemed to want to put the characters on the 'newest, shiniest toy' in the fleet. In Enterprise they have the NX-01, first of her class and even an experimental, no less. In TNG we get the Enterprise-D, a brand new ship commissioned under Picard, and AGAIN with the Enterprise-E. Voyager, IIRC, is the first ship of her class as well. DS-9 was a space station so it doesn't really fit the parameters of the discussion, but when they got around to giving them a ship it was...you guessed it...BRAND NEW! The USS Defiant, a new experimental warship with more clout than the average bear.
Now, in nu-Trek we get a brand new Enterprise once again. No history, no reputation, just a shiny new ship.
Am I the only one who sees an artificiality to all this?