Question regarding the big E
If the big E has always had the option to separate the saucer section from the rest of the craft in times of crisis.
One would think that this type of operation could also be used as a means of upgrading the ships engines at any stage, sort a plug and play system.
Theoretically you could simply uncouple the primary hull (saucer section) and whack on a new secondary hull, nacelles (or a complete replacement).
It would be relatively easy then to refit the bridge with any new systems leaving the rest of the saucer alone and be on your way in a few days.
Has anyone any knowledge of this type of scenario been mentioned in any of the series or books?
TREK IS TREK. WHATEVER THE TIMELINE!
The next TV Series should be called STARFLEET!