Hmm. In David Gerrold's book on how "The Trouble with Tribbles" came to be produced, he related how one of his draft scripts for the episode, when it got retyped for mimeo, ran way too long. It seems his new typewriter was 12-pitch, and script page counts were based on 10-pitch. And so he had to cut it ruthlessly.
And he, too, declared that "Tribbles" ended up a better, tighter story because of the cuts.
Personally, I'd rather read a 175-page novel, as a 175-page novel, than read a 175-page novel that had been stretched to 375 pages.