If the argument is made that the Kelvin Timeline maintains its actors and specific look and feel in another dimension or whatever, then the next step is to imagine the same for TOS, which doesn’t seem to be the official policy. TOS was updated for 2017, so the Kelvin Timeline could follow in the 2020s, and we’d just have different events, unexplained character ages and the butterfly effect on technology, but otherwise Peck could play Quinto’s Spock also and so forth.
Or would it simply be too soon?
Or would it simply be too soon?