Before knowing it was supposed to be some sort of pilot, I didn't really like the episode.
It wasn't about the Enterprise or Kirk. They had many scenes without anyone from the series in it. Our heroes were bit players, losers, wrong about things. I didn't like it.
I only just accept it now knowing it was a pilot (OK 20 years ago when I heard that it was).
Kirk and Spock can't be defeated by a ditzy temp. That is soooo wrong.
I liked the cat though.