All this fascinating discussion has gotten me thinking, and I hope this is still on topic and doesn't warrant a new thread:
Do you think sometimes the morally questionable actions were diluted by the exact circumstances the writers chose to put them in? That didn't come out at all well, so I'll give an example:
Oh, definitely! For instance, it sure was fortunate for Riker that his clone hadn't woken up yet - how would it have changed things the clone had opened his eyes, or worse yet, started begging for his life? What if the procedure to save Sim's life wasn't conveniently unrealistic? Hell, how many times in Trek has some planet's problem been wrapped up neat as a bow via some inspiring speech by the captain? The writers/producers let themselves off the hook all the time.
Do you think they could have gone that dark on network TV at that time?