A complete waste of time; it appeared in every installment DS9 counterparts were getting killed off. There was 1 ep. where I thought the writers would actually do something interesting but didn't. Jennifer Sisko died in the normal universe but in the Mirror U. she was still living, but of course as predictable with the War seasons she dies... again, it would have been interesting to be with a man who was nothing like the sociopath she once knew and adjust to a boy who looks at her as his mother--reborn.
It would've been a new form of Stepmother, I prefer Jennifer in any form than that 2 faced criminal Yates. Plus Sisko had grown to becoming a stronger man, and Jake was becoming a man. Oh well, I was really asking too much for that show. The show was mainly about exploitation, death and sorrow, and forgot about being explorers after the 3rd season.
Star Trek was about hope, and Kirk gave that mirror universe hope, and all DS9 did was present "hope" as a futile, failed effort, and a big, waste of time.