This show has been a balm for my worst nerd impulses since episode 1, and I will miss it. As finales go, I think this was damn near perfect, too.
Like others have mentioned, Rutherford's sudden frustration with the Cerritos felt a little off to me, but that's really small fry in the larger picture of
PREVIEW_HEREa bona fide, stable quantum portal to parallel universes hanging around the Alpha quadrant since 2382!
Wow, you'd think that would have been brought up even tangentially in Prodigy or chronologically later set shows? It could even feasibly have been used to
PREVIEW_HEREbring Mirror Giorgiou home to her own universe in Discovery s3.
But what do I know, it might not be as stable as it looked in this episode...