by making Robau a man, by making Olsen a man
You would have freaked
if those female characters got killed over males.
Canonically, do we know that? Might Keenser be some other gender?
featuring a nameless male Vulcan instead of T'Pau
Then you missed seeing the rescued female. I'm sure I saw one - and I hoped, at the time, that she'd be revealed to be T'Pau.