I wouldn't change anything in the design, just the scale. I'd have had it as big at E-D was in TNG and increased the crew size. The ship always seemed very small for a starship spending five years in interstellar space, and it's crew of 430 sounded undersized, too.
Edited to add, the deflector dish looks a bit dated. Maybe I'd change it a bit. Of course, they did that to the refitted Enterprise. So, in keeping with the differences between original and refit, it'd be somewhere in between.
Edited to add, the deflector dish looks a bit dated. Maybe I'd change it a bit. Of course, they did that to the refitted Enterprise. So, in keeping with the differences between original and refit, it'd be somewhere in between.
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