Phil,
I'll agree that Italeri does market their Nimitz-class kit as different ships, without much difference between them, their aircraft are bad and that slapping a "74" on a 1975 era Nimitz doesn't make it the Stennis.
But with some research, and a little extra work, no more than most ship modelers would do with any kit, you can come away with a very nice Nimitz-class CVN.
I've only built one, but I didn't have fit problems, bad molding, etc., that one would associate with a bad kit. I haven't tried a Trumpeter kit either, so I can't make a comparison. They may be much better.
I'll admit that it does really disappoint me when I see a carrier model, made from any kit, with no changes to account for the differences within the class, a flight deck painted black with mix matched a/c that never served together, or aboard, that particular ship and little or no attention to masts and rigging. But that's the modeler, not the kit. It can be argued that the kits should be designed to prevent those things from happening, but then so many kits of all kinds of subjects have an issue or two. Issues that most modelers correct.
The Italeri kits are older and perhaps have been outclassed. Still a very good model can be built from one. I guess that would keep it off my list of 10 worse ship kits.
I never saw one molded in blue. I'll admit, that wouldn't be a plus.
Mike