For films V and VI, the symbolism of the Old Generation commanding the face of the New Era could have been so much more effective than simply putting them on another refitted Connie. To the average viewer --or even the casual Trekkie --giving them another Connie also cheapened the death of the original 1701. It was a reset button of sorts. But it wouldn't have been if Our Heroes would have been given an Excelsior class. And the conversations and themes they had in both TFF and TUC could have been even more vivid if the 1701-A would have been an Excelsior class.
From what I understand, you have pissy fans to thank for that.
Apparently the whole point of building the Excelsior model was that it would have eventually been Kirk's new command after the NCC-1701 was destroyed. It was built the way it was by ILM because it was a much easier model to film than the unwieldy TMP Enterprise.
But apparently a bunch of self-serving fans wrote letters complaining that they hated the Excelsior and that they didn't like the rumor that it was going to be Kirk's new ship. So instead of ignoring these whiny assholes, the movie producers decided to cater to them and bring back the TMP Enterprise, which caused consternation at ILM because they always hated filming it.




I never thought Excelsior was "ugly" per say I just thought it looked kind of ungangly and clunky and lacked the graceful lines of the Enterprise refit. It's like comparing one of the classic ocean liners like the Queen Mary or the United States to one of those modern Royal Caribbean mega cruise ships. They're both impressive in their own way but the older liners just have a grace and beauty about them that the new ones cant match.
Personally (I know I'm going to catch major shit for this) I always thought Enterprise-D was ugly. It kind of reminded me of a slug the way the main deflector dish was shaped and the way the saucer was an oval and the whole thing was rounded and didn't have many sharp corners, plus just too many damn windows. I grew a certain fondness for it over time and even bought the toy of it, but it never mesmerized me like the 1701 refit did. Just the same way a Ticonderoga class cruiser will never mesmerize me the way an Iowa class battleship will, it just doesn't have that something special that makes it truly beautiful IMHO.