"The City on the Edge of Forever" remains one of the best Star Trek episodes of all time, and the plan to bring back William Shatner for a sequel that explored the splintered timeline is now my favorite missed opportunity in recent Star Trek history. Would you have liked to see it happen?

https://comicbook.com/tv-shows/news/60-years-later-star-treks-best-classic-episode-almost-got-a-sequel-with-william-shatners-return/

That would have been awesome! They should do it now: bring Shatner in as old Kirk, have him remembering it (like Gibbs in NCIS: Origins) and use the new actors from recent shows.