Despite the deceptive retconning done by the people involved in the Berman camp, watching TOS makes it clear the warp engines were away from the body of the Enterprise.
Except not - the pylons specifically place them as close to the body (saucer) of the ship as possible, negating all the good work done by the neck that places the secondary hull away from the primary!
The NX-01 design does a better job there, with the pylons actually moving the nacelles away from the hull, and not back towards it. Perhaps early Starfleet engineers indeed thought that nacelles should be kept away from the crew (even if sometimes the crew should be kept in the nacelles!), and by the time of Larry Marvick, they had wisened up and put the nacelles close to the saucer for Kirk's ship...
No objection to the idea that ENT might have done a warp core ejection or three, to highlight the dangers. Or a nacelle ejection, or both. Of course, the problem then would be "Now what?", as it's not as if Starfleet would have had a repair or even retrieval infrastructure in place... Archer might be stranded in space for decades even in the best case.
Timo Saloniemi