The real test was up against the USS Defiant in the mirror universe episode.
Yes. I didn't get to see that episode until this past January (and didn't see the entire series until last month). I still see too much Akira in NX-01, but the side by side scenes with Defiant really work. It shows that John Eaves (design) and Doug Drexler (CGI mesh & detailing) knew what they were doing all along. The two ships show how right Matt Jefferies was with his original concept of minimal exterior features representing the future.