I don't like the 725m size, but if that's what they say it is, that's how big it is.
I will say that I don't like the design, particularly the secondary hull. The saucer looks too far back, cramped against the nacelles, and the cutaway on the lower part of the secondary comes way too far forward. It looks unbalanced, with too much visual weight on the front of the secondary hull rather than the saucer.
Are people really still reciting the Catalog of Stylistic Complaints™ rather than simply saying that they'd rather it looked exactly like the Original Series Enterprise or the TMP Refit? Because none of those details are "wrong" by any other yardstick.
They don't have to be "wrong" for me not to like them; nor would the design have to mimic one of the previous ones in all details for me to like it.