We all know there were a few models doing the rounds which the art department had cobbled together, but in-universe, do you think Starfleet effectively did the same with some of these 'hybrid' ships?
For instance the Centaur class was an excelsior saucer with different nascelles and no secondary hull, do you think some starfleet engineer did a tour of the surpluss depot yards at the height of the dominion war and said 'I'll take that saucer and those engines - oh and someone pass me a blowtorch, we're running out of time!'
For instance the Centaur class was an excelsior saucer with different nascelles and no secondary hull, do you think some starfleet engineer did a tour of the surpluss depot yards at the height of the dominion war and said 'I'll take that saucer and those engines - oh and someone pass me a blowtorch, we're running out of time!'