Star Trek Online had some really kick ass story lines.   Since we have DS 9 involved here a really good one off the bat to get things rolling would be the return of the Dominion Fleet the Prophets displaced from season 5 of DS-9.<br/><br/>For those unfamiliar, during the retaking of DS-9, the replicating mine field which kept Dominion reinforcements from coming through was taken down, and a second Dominion Fleet came through the wormhole where in a deal with Sisco the Prophets made the fleet "disappear".<br/><br/>In Star Trek Online, the writers had that fleet be displaced in time, and they proceeded to attack and occupy DS-9 and the storyline revolved around missions and actions to retake the station and to deal with the massive Dominion Fleet who was time displaced and now dealing with history in which they believed was "fake news".  I mean how could the Dominion surrender of all things to the weak Federation.<br/><br/>I think we really could have fun with this.  Throw in some Mirror Universe shenanigan's and we have ourselves a great party here!