Lee Enfield wrote:
I want to add, that the sheer volume and size of the saucer section might be the reason it has no warp drive.
To generate a warp field (big enough to transport that mass) the whole warp system woud certainly have to have a drive, comparable to that of the battle section. That means less space on the saucer for labs asf.
So, actually, it could be easier to generate a warp field around a smaller object - because it's mass-dependant.
...And remember, that the warp nacelles (almost?) always reflect the size of the the ship to carry?!
Well, hang on...
The saucer section is large, so it has plenty of space for a warp core. And those big nacelles are what's required to move the stardrive AND the saucer. Thye saucer by itself has a smaller mass, so it wouldn't require such large nacelles (if nacelle size indeed has a relation to the mass being moved.)