I enjoyed it more than last week's episode, but it still wasn't great...merely average.
What I enjoyed -
By far the best aspect of this episode is seeing the shipboard interactions between the Discovery crew. We get to "check in" with everyone who is still remaining on a ship, right down to characters like Bryce which were barely bridge furniture even in Season 2. Indeed, I feel like the episode peaked kinda early because the opening scenes of the crash and recovery were so strong, because we got to see a Starfleet crew working together to solve problems collectively. I wish we had a whole episode of that TBH.
Because so many characters were re-introduced - from Nhan to Linus to Detmer) - we really didn't get the chance to have a cohesive B plot this week. But Stamets got a nice mini-story regarding not being able to accept his medical limitations during his recovery.
What I hated -
Georgiou is just awful and nearly ruined the episode. Her hamminess as a character is just completely tonally off here compared to...everything else which is going on. Her early scenes were reminiscent of someone farting audibly in a large conference room - just embarrassing. This isn't of course because they're badly acted, but they just do not belong in this episode as scripted/portrayed, and result in a massive inability to suspend disbelief on my part. The worst part by far though was her explanation of why she came to the future. She didn't want to stay behind because they'd make her head of Section 31, and she hated bureaucracy??? She was the friggin Empress, she would do anything to get more power. Presumably this is a cover story because she doesn't want to admit it was due to her (weird) feelings for Michael, but it rang so hollow.
Star Trek has always been far from scientifically rigorous, but I never thought we'd see an exploded planet with a large chunk taken out of it...which somehow has not transformed into a molten ball and still has a breathable atmosphere. At least Tilly recognized how weird it was - presumably some future tech is involved. Again though, it kinda took me out of just "enjoying the show" early on and put me into nitpick mode.
Mixed feelings -
The bog standard western plot (complete with saloon doors and a bad guy wearing spurs) was...bog standard. It was a strange choice tonally considering this is supposed to be The Future and presumably the writers want us to think it's an alien place. But it did the job more or less.
Not sure how I feel about the "parasitic ice" thing. Trek has had worse science in the past, and I'd like a bit more technobabble to explain what the hell was going on, but I can live with it I suppose.
Finally, the baddie explicitly mentioned "V'Draysh" twice, which is presumably the word for Federation in the pidgin language he mentioned. This is the term that Craft used in Calypso, which means they are going to tie that Short Trek into continuity. My heart dropped a bit at that, because I've really not wanted that sweet standalone story ever really explained (and it has logistical issues which would require an episode of setup). On the other hand, if the uptime Federation is the V'Draysh, that at least means that Craft was really a "bad guy" - which I am happy about, because the idea that we had to make the Federation evil just because Craft was a good person was box of hammers stupid.