DS9 will return to the Mirror Universe a few more times during its run (around once a season). Of the DS9 Mirror Universe episodes, I enjoyed this one the most.
I do like TOS" "Mirror, Mirror" and ENT's "In a Mirror, Darkly" episodes a bit more.
The idea that, in a mirror universe, the entire political history of a universe would be different for centuries and yet all the same individuals there would wind up on Deep Space Nine/Terok Nor is incredibly silly....and yet I'm willing to suspend my disbelief to watch this play out. 😁 #AllStarTrek@allstartrek#StarTrekDS9#Crossover :DS9: