I can't say that I ever saw a TOS episode that looked fun or like the crew was having fun, but then I haven't seen them all... Sisko never left a crew member behind. Proof? By the end of the series, his crew was safe and sound. The only one that died was Jadzia, and that was on the station by the hands of a possessed Gul Dukat, not because she was kidnapped and Sisko failed to launch a rescue attempt or because of poor security (DS9 had the best security chief in Odo out of them all). The Sisko wouldn't do that.
No matter though, like I said, each one of my top 3 has something special about them, and none would just leave a crew member behind.
- Of course you did.