Peach Wookiee wrote:
Sisko is another captain and theoretically could take over if Picard is unfit. That's what he brings to the table.
Deemed unfit by who?
Obviously Crusher didn't deem him unfit for command as she was prepared to stay aboard the Enterprise
and fight the Borg and Troi was on the ground. And I seriously doubt that any of the crew would've followed Sisko over Picard.
Story wise it's just a dead end, as Sisko would've been in the same position as Worf. Probably worse off as the crew doesn't even know him, he's just a random guy wearing captain pips and we've seen how the various crews have reacted to those over the years.