It always struck me as being an EASY way to design a ship. If you assume that the Enterprise needs basically three sections:
- The place where people sleep and live and do scientific experiments
- The engine
- The warp nacelles
The having them sort of separated is a convenient way to design and construct a ship. There’s no particular reason why it shuld be all one big blob. The turbolifts seem pretty fast.
Also, don’t rule out the issue of looks. This is a mostly human-designed ship. Humans like pretty ships.
In space, rocket engines of all sorts generally don’t leave visible traces as they fly through space.
Easier on the audience. It’s easier to visualize.
Technically, the “galactic axis” thing would explain everything except why you don’t get a ship 180 degree upside down. The galactic axis has a horizontal plane of reference, but no distinction between up or down.
There’s no good reason for this at all.
-When ship A fights ship B, why doesn’t ship A just calculate ship B’s shield frequency so that it can penetrate it?
Actually, there probably is, but the reason you don’t see it is the same reason you don’t see the washing machines; it would be boring. It’s not the show’s point.
Maybe they employed Bell’s theorem.