Another good job, Christopher. I liked all of the cameos and name drops (including those in the quotes at the top of the chapters) - it was fun to see just how many of them I knew off the top of my head (I got the Federation Councillor from the 2160s, the future Captain of the U.S.S. Hypatia, Worene's species) and how many I needed to look up (I didn't recognize the U.S.S. Kongo's captain, for instance). I also liked how you mentioned that Kirk knew how to have a good time during shore leave but once he was back aboard his ship, that was it, and I laughed out loud alongside Sherev when Spock - 15 days into their working relationship - thought that Kirk was as logical and dispassionate as himself (at least on duty) due to his rigorous command discipline. And her follow up comment on Vulcans and their need for logic to control their own passions made complete and total sense and I'm surprised that it took so long to be articulated like that.
You also came up with two great Executive Officers for Kirk on the U.S.S. Sacagewa, Commanders Mehran Egdor and Eshu Adebayo; the former was a good foil for Kirk, the ambitious Starfleet officer with almost two decades of service feeling passed over because his Captain - the youngest officer to ever sit in the center seat - may have/almost certainly benefited from unconscious bias and privilege, and the latter a fifty-year veteran who was fine with teaching young Starfleet captains how to command ships (I definitely felt like Cmdr. Adebayo and Cmdr. Lorna Simon from Capt. April's Enterprise were cut from the same cloth and were probably even peers and/or friends).