Apparently i am too old. The original reasoning for keeping the nacelles far away from ships hull (the big 3) were:
1: The bussards of this era produced radiation as mentioned earlier in the thread.
2: The bussards produced a lot of electrostatic energy which if too close to the hull would cause arcing. (aka lightning bolts).
3: Early warp nacelles did what the name implies, they heavily warp space (too close to the hull and you can even warp human tissue).
You also mention the Defiant, Defiant= different era different technology. Sorry if this is too old school.
Still i like the design as with most pre-TOS ships.
1: The bussards of this era produced radiation as mentioned earlier in the thread.
2: The bussards produced a lot of electrostatic energy which if too close to the hull would cause arcing. (aka lightning bolts).
3: Early warp nacelles did what the name implies, they heavily warp space (too close to the hull and you can even warp human tissue).
You also mention the Defiant, Defiant= different era different technology. Sorry if this is too old school.
Still i like the design as with most pre-TOS ships.