I understand that some of the original series actors are still alive, but out of curiosity, when do you think each member of the original crew of the Enterprise died in canon? We know McCoy was 137 by the time the Enterprise D was around, and Scotty is still in good shape at 148 thanks to a clever transporter trick he used for survival, so we can really only speculate when each of them passed away. I would assume Scotty would probably be the last one to die, possibly around 2410 or earlier, but that's the best I could come up with.