I remember when some fans thought Kirk would indeed be killed in Star Trek VI based on the alternate clip used in an early trailer of Martia-Kirk being hit and vaporized by the disruptor beam.
[yt]https://www.youtube.com/watch?v=638S8n2_Ab8[/yt]
OMG, I remember that trailer well and seeing it for the first time during the televised 25th Anniversary special.
What a badass trailer, but I can remember my heart FREEZING at the sight of Kirk being vaporized.
I also remember misunderstanding Christopher Plummer during this trailer.
Instead of "CRY HAVOC!", I thought he had said, "I HAVE HIM!" making me suspect that he killed Kirk.
I felt a sense of relief that the Enterprise 7 all lived to the end...and then GEN ruined everything.

It was an exciting trailer and my only hope was that last, classic "FIRE!!!" by Kirk. I was also sorry we didn't see Kirk say, "Battlestations." in the final version. Shatner always did a great, "FIRE!" but I always liked the way he said "Battlestations".