Originally Posted by dave_windows:
“Pretty sure finale has clara and doctor side by side because of that clip in the trailer.”
A carefully chosen clip to mislead and confound expectations, perhaps? It's not unknown (though I think it's unlikely in this case) for trailers to include bits that don't make it into the final version.
Fake (clone/android/Zygon/hologram/other) Clara?
A splinter Clara?
Real Clara from earlier in her timeline?
Real Clara in a flashback?
Or possibly she
has been saved somehow?
At any rate, we just don't have enough information to judge whether or not her apparent death will be cheapened until we see the episode in question.
At this point any opinions are mere speculation, based, I assume, on SM's (and RTD's) track record*.
(*) Terms and Conditions apply. Past performance is no guarantee of future "returns".