I think the fairest thing to do would be letting Mafia choose it
But they probably wouldn’t choose to revive the same person they would choose not to erradicate
So the fairest thing to do would be analyzing posts to see who they were less worried about killing aka the person suggested last
But even his would be kind of hassle and they could have dispatched one of the previously chosen people to bring the new one in
So maybe roll a d3 and do it at full randomness or don’t bring anyone back as they would have unfair info but instead give us a buff
Your call if somehow I’m right