Re: Speculation: Must the villain be Gary Mitchell, or... ?
If the villain is portrayed well, then who cares whether it's Mitchell, Khan, or the Tribble Emperor?
It's not the character that counts, it's what is done with that character.
In all honesty, I'd much rather watch the Tribble Emperor (of Random Capitalisations) than Khan...but I suppose we must take what we get.
It was a nice day ... AND THEN EVIL CAME!— The Collected Works of Stephen King, condensed version