One review I read implied that Shin has a thing for Sabine. I don't really see it myself, but that might explain why Sabine got off easy with the lightsaber impale. Maybe Shin was only aiming to disable her rather than kill her.
Also, another review suggested that the bits of gold and red bands on Thrawn's 'Night troopers' are Japanese stylings symbolizing that they're undead. I mean, Captain Enoch even has a gold death mask (reminds me of the Returned from Theros).
Also, I thought it was interesting that the Fates Great Mothers* singled out Sabine as a Jedi but didn't mention Baylan and Shin. I guess they could sense that Sabine, despite having no control of the Force, is trying to be a Jedi, whereas Baylan, despite being raised at the temple, no longer considers himself one and isn't training Shin to be one (despite her having a padawan braid).
*Did anyone else note that the three Great Mothers are named Klothow, Aktropaw, and Lakesis? ... Sound familiar?