This one gets a
10 - which I don't give out lightly here.
I really like that this wasn't just another TNG-esque "Go into the anomaly, find something to scan, and create a particle of the week that solves the issue in the last 5 minutes..."
There was some mystery, and the crew as a whole worked together to figure things out and get out of it but is was done in a way that held the tension, and beyond the fact that this is a TV show, and you KNOW overall the leads will survive (or most of them

) - there was still a sense of real danger here that harkens back to the original Star Trek and I really appreciated and enjoyed that aspect of the episode.
I also liked that there was some real and substantial character development on many of the characters, but it was natural and didn't feel forced because of the needs of the plot. It was organic and worked well.
And the fact wasn't lost on me that after 55+ years of 23rd century era Captains (of which Burnham is still of that era) talking rogue A.I. down to destruction to prevent a catastrophe/genocide/whatever -- here we had a 23rd century era Captain talking to support/cheer on/help a still somewhat rogue A.I. (IE - no one expected 'Zora' to manifest itself as it has) through a major crisis and keep it online to SAVE the ship and it's crew.


I also liked the way Book continued to work through his emotional issues here and the way the too was presented.
My two nitpicks:
1 - With 32nd century Transporter tech the way it is, that ensign who was sucked out into the void should have been able to have been beamed to safety; so that particular plot element to 'ramp of the feeling of danger for us the audience' seemed narratively forced, especially with how they used the Transporter tech to keep the crew alive later in this very episode.
2 - The same goes for Burnham's situation in the EV suit as things 'heat up'. Once Zora has accepted the command and the responsibility, Burnham should have been transported into the pattern buffer by Zora make sure she too survived.
So yeah, two very good episodes of REAL Star Trek in a row by this current writing staff...I hope they can continue this trend.
Edited to add:
Also I loved the incorporation of Star Trek's 'Galactic Barrier' into this storyline in a neat way here; and the fact the 'evil protagonists' seem to be from outside our Galaxy = unique aliens the Federation has most likely not encountered before.