I recall Gene Roddenberry saying at some point that he went out of his way to write a vital engine room scene early on, because Desilu might not have let him build it later. It first appeared in S1E5, "The Enemy Within."
The briefing room is need in both pilots and E3, "The Corbomite Maneuver." It's funny that a room where people sit around talking was so immediately vital, while getting the ship an engine room was no sure thing.
I note that the ship's corridors have interesting nooks, like the triangular ladder and the Jefferies tube. This adds a lot of texture versatility at presumably a low cost.
The briefing room is need in both pilots and E3, "The Corbomite Maneuver." It's funny that a room where people sit around talking was so immediately vital, while getting the ship an engine room was no sure thing.
I note that the ship's corridors have interesting nooks, like the triangular ladder and the Jefferies tube. This adds a lot of texture versatility at presumably a low cost.