I was rather disappointed with this arc. "The Khitomer Conflict" didn't feel like TOS at all. Kirk has no agency in the story and the plot rather resolves itself rather than Kirk taking action to resolve it. The end is resolved by the intervention of Section 31. Kirk does nothing clever and reacts more than acts in the story. And the reveal of Sulu's sister wasn't really a twist. You could see it coming a parsec away.
It's true that Kirk was swept along by events. I'm hoping they'll build on it. Fool me once, shame on you sort of thing so that the next encounter will be a more even duel.
The notion that Kirk or Spock always have to save the day (or Scotty if it's a ship problem) is one of the things that dates TOS. However, I also don't like it when they have to 'force' characters to save the day e.g. Chekov is suddenly a transporter whiz and has to run all the way from the bridge to perform a task that really should be within the capabilities of any trained officer etc.
I do prefer it when a character is allowed to perform well in their chosen field instead of gifting that to someone else e.g. Spock carrying out code-breaking and communications repairs in TOS; Chapel assisting instead of leading bio-research etc. I suppose I also have to concede that if the characters never do anything outside that field they'll stagnate.
I hope the comic can maintain a better balance overall.