I'd rather not consider the Olympia as a Constitution-class ship with that number, even though I don't have a problem with Constitution-class ships in the TNG era. Now, if it was an Excelsior variant, and we were using my idea that it was ship 576 of build 21, then that would work fine for me.
Since the ST:III wreckage got re-used a lot, I would not consider it a confirmation of class. The secondary hull model used at Wolf-359 would be a much stronger indicator of class to me.
Regarding the Operation Retrieve blueprints: Oddly enough the difference between the Excelsior and the others ships was always easier to see for me than the names and class images of the other ships. I felt that they specifically made the Excelsior look different, perhaps because it was the only one at that time, whereas they just used Constitution-class images for everything else.
Without much of a reason why, I just don't like the idea that there were Constitution-class ships in build 18 or 20. Especially 20, because the Excelsior is a part of this build. (The FJSTM does this too, but in my mind it shows what ships were planned, and then by the time they actually got to the 18's, they had given those ships different names and were building different classes.) Correcting the Eagle to 1956 I can see, though. I would prefer to believe that Starfleet called in Miranda-class and Soyuz-class ships for this, for variety, but the chart shows what it shows.
Has anyone discussed this matter with Micheal Okuda? Was it really his intent that there be Constitution-class ships with numbers starting with 9, 18, or 20? Even in TOS-R, no Constitution-class ships were ever actually shown onscreen with numbers above 16 or 17, and I assumed the 16's were older ships that had been upgraded to a Constitution-class appearance, even if they were perhaps different on the iniside.
In particular, the 956 of the Eagle is odd for its time. If ship number 1017 could either be built or refit to TOS Constitution-class appearance, I guess 956 could be, but now we are talking about having to do it again to reach TMP refit appearance also. Is that what he meant?