Even 30 years after its debut, Star Trek: Deep Space Nine remains, perhaps, the most singular entry in the nearly 60-year-old universe Gene Roddenberry created. From the examination of non-Federation alien cultures to the seasons-long war arc, it was as powerful as it was different from what came before. However, the series finale of Deep Space Nine made a mistake its star objected to, but there is a straightforward way some future Star Trek story can fix it.
Source：https://www.cbr.com/star-trek-fix-deep-space-nine-finale-mistake/
