When one plays in the fictional playground that is setup to be turning a timeframe of a legendary icon...you don't just change the icon to suit modern tastes. You use the icon because that's what is suppose to be there. And the old USS Enterprise is a icon. Both in and out of universe. The 11 foot model sits in the National Air and Space Museum and was recently restored. The Space Shuttle that was named after it is on another complex of the same museum. (People are going to talk about superheroes changing all the time...this is true, but their timelines also change with them....and when someone decided to revisit an older timeline, the superhero's old look is used again to provide the reader with the proper setting.)
That the ship looks old and from the 1960s is immaterial. That's what it should be, both from the perspective of setting up the show to be just ten years before Kirk, thus establishing the era on a timeline relative to previous shows. And from the perspective of a starship designs that has been seen up to the early 2000s that has still looked like a saucer with a tapered cylinder attached to it with two more long cylinders attached to that via straight pylons. For 40 years they didn't tamper with the design much for her 2260s appearances. This new series is set in the 2250s, and while Pike's Enterprise is likely similar to the same as Kirk's, the basic shapes will remain mostly the same.
That the ship looks old and from the 1960s is immaterial. That's what it should be, both from the perspective of setting up the show to be just ten years before Kirk, thus establishing the era on a timeline relative to previous shows. And from the perspective of a starship designs that has been seen up to the early 2000s that has still looked like a saucer with a tapered cylinder attached to it with two more long cylinders attached to that via straight pylons. For 40 years they didn't tamper with the design much for her 2260s appearances. This new series is set in the 2250s, and while Pike's Enterprise is likely similar to the same as Kirk's, the basic shapes will remain mostly the same.