In this particular case putting AOS and TOS under the same fandom tag could make things messier, since AOS!Spock and TOS!Spock aren't the same character, but TOS!Spock is AOS!Prime-Spock. Okay, Spock isn't an eligible character, but anyone wanting non-Spock TOS!characters on AOS would be hard to nominate that, I think?

Or maybe no one is interested in that and I'm overthinking it.