My Name Is Legion wrote:
Star Trek: Nemesis already did this.
Really? Nemesis was *identical* to TWOK. The figure from the "past" hellbent on vengeance against Kirk/Picard -- each the same person, yet opposite in morality. The "doomsday" weapon, the battle in the "nebula", Spock/Data sacrificing his life to save the Enterprise (but not really dead; the Katra/B-4 chip lives on...).
"Shinzon is Khan" is quite accurate a comparison.