Re: Why the lack of Classic characters?
To me, it really is the biggest missed opportunity for the 50th - the lack of Paul McGann as the Eighth Doctor. I really think he should've been in there, perhaps as a contrasting figure to how the Doctor got to be after the Time War.
"Spock...?" Kirk said, whispering.
"I am... most pleased to see again, Captain" Spock formally replied.
McCoy shook his head in disgust. "Oh, for crying out loud, Spock. Its been eighty years!"
"Seventy eight point four years, Doctor."
The Holy Three meet again, in The Return