The fact is, the time spent in the elevator is largely a function of how long the conversation takes. At least in The Wrath of Khan
, they had Saavik take the trouble to stop the elevator and then went a step further and made fun of the cliché by having the doors open to an irate McCoy. It was a good moment.
I agree. It should be noted that the doors on board are also conversation - sensitive as well, knowing exactly when to open regardless of how close someone stands!