^^ While I'm not completely satisfied about the style of some of the changes, it's not exactly surprising that refits for these ships would change them aesthetically, considering the fact that by this stage, some of these ships are approaching 50 years old. The Constitution refit of the movies was done to a class that was far younger than that by the stage the refit happened.
In any case, we can still use the original parts. I wonder if it will be possible to tell the more 'dedicated' fans from the players who are less familiar with the franchise purely by the ship styles that they sport.
I think the more dedicated or long time fans, are going to have the original Hull configurations, And the newcomers will get the parts that look most 'Cool'.