I not know if this has been brought up before but when Spock's body has been resurrected by the Genesis effect he went into least 4 different age stages during planet ending at 25 years old(acted by Joe W. Davis). My question is if Kirk had managed or perhaps Saavik and David had gotten 25 years old Spock from the planet genesis effect would it mean his rapid aging would have stopped. We would have then seen younger Spock at the end of the movie instead off old Nimoy.