Thanks for the nice words. I am
planning on writing a final essay on the Excelsior, but only for the appearances of either the Bill George model or the Greg Jein version (not the CGI version, which we saw millions of times in DS9).
As for the idea that Starfleet, like the Navy, builds ship classes in batches: Funny you should mention that. One of the reasons why I stated writing these essays was because they were part of a larger project of trying to determine what the conjectural Starfleet classes would look like based on registry numbers, construction times, etc. While I haven't completed that essay, I did finish a rather involved hypothesis of how Starfleet assigns numbers, based on both a chronological scheme and a "batch number" scheme. The result? The batch number scheme tends to make more sense. I can post that too if anyone would like to read it.