As much as I love Zachary, he's very much J.J.A's boy -- so, no. Disco needs its own poster boy.
I’ve no idea why, exactly, Zach Q was passed over as Spock. Assuming he was available, he might not have been willing to play Spock on the small screen.
Or, he might not have had the specific abilities TPTB were looking for in their
ST: Discovery version of Spock.
But even if he had, I doubt Zach Q would have been selected – because he had been ‘tainted’ by the Spock that he’d portrayed for JJA.
I really don’t know, I’m speculating. I think that had his fans gone to see him on
Discovery, they wouldn’t have seen
Discovery’s own Spock because they would have been too busy projecting JJ’s Spock on him and becoming aggravated when he didn’t do this or that/behave like this or that and complained – and the
Disco producers wouldn’t have wanted to see that happen.
I’m mindful that Nicholas Meyer is the Consulting Producer of
ST: Discovery. He first come on board as a writer for the series, in early 2016. Some 3 months after coming on board, Meyer was asked a loaded question in a Q&A session at his
alma mater, the University of Iowa. He was asked how he felt about JJA reinterpreting and remixing
ST: The Wrath of Khan.
Meyer began by making it known that he had read bedtime stories to JJA and attended his Bar Mitzvah, so it had been a long friendship. Then he said some other things, which included inviting the audience to consider what made something a “homage” rather than a “rip-off”, and he concluded soon after.
But among the things he said was this:
“JJ’s Star Trek movies are not mine. And, they emerge from a different sensibility. I don’t understand a Star Trek where Spock is beating the sh*t out of people. It doesn’t seem like – but, yeah, you see, we are all old, you know.”