I think this got things off to a reasonable start, but it doesn't feel like the strongest episode out of the gate. Maybe it's because the show deliberately chooses not take on the cliffhanger of the last season in the first episode. Starting the season with only part of the cast undertaking the mission I think also makes the episode feel a bit slight.
It's also a bit of a darker episode than the last season, but I'm not sure if engaging with the Klingon civil war aftermath is actually necessary in this episode. In fact, leaving out the Klingon stuff here would make it a bit less stodgy to me. I guess there is some curiosity as to what SNW characters were doing during the war, but it really feels like here, the only reason they framed this entire episode around the war was so that M'Benga and Chapel could juice themselves up with a substance that they never quite introduce before using it and Die Hard Klingons for a chunk of the episode. There's maybe some M'Benga trauma, but giving the character another trauma moment where some (particularly Ortegas) remain comparatively lightly characterized feels...meh.
It's probably all the Discovery elements, both in plot and in set design on screen, that make me feel this way, but I was hoping that Discovery would learn the best lessons from Strange New Worlds. This episode has me slightly worried that instead of that, Strange New Worlds may be learning some bad lessons from Discovery. That said I'm hoping things get better across the season. I thought this was good but just not quite what I wanted from the season opener.