I'd rather see Sisko stay on the Robinson. Moving him to the Enterprise seems too small-universey to me.
That's why all the names mentioned are to small-universe and far-fetched for me. Data has made it clear that he no intention (for the forsee-able future) to return to the Fleet, and even if he did, he won't simply be offered a command.
Kira,, Riker, Sisko, Ezri.... they would all be to fan-wankish and weird.
Worf or a new character are the only real logical choices. And if it's a new character, please let him/her be alien. And not a complete new one, but an established race, like Andorian or Tellarite.
How is Worf, a character from TNG and DS9 and a long time associate of Picards, less fan wanky and more logical than Kira, Riker, Sisko or any other Trek character?