To be honest, my main concern was that they'd do what fansites like EAS have done, and pretend the Kelvin and her variant designs (Newton, Mayflower, Armstrong etc) were a lot smaller than we saw on-screen in order to make it fit size-comparison charts more snugly.
Why would they do that? The twelve Constitution starships would have been constructed to be the most efficient size for dependable longterm patrolling and exploration, based on the lessons of the past. Earlier ships may well have been both larger and smaller than the now-standard starship. You don't need extra space for a village of future colonists going off to populate a planet if your brief is to explore unknown space - and drop in on colony worlds (in known space) for medical checkups, etc.