We've had a user who asked many questions, mainly follow-up questions, some of which lacked sufficient detail and a review request. Due to some issues stemming from issues of the user and the community regarding how these questions should be asked, the user eventually had their account deleted.
Most of these questions were already answered, but there are still some that haven't been answered, so they're on our list of unanswered questions.
Given the locality of these questions, visitors are not too likely to find value in them. The only one receiving the most benefit would be the OP, but this is for situations in which the OP is gone. Other than that, these questions may only be good for gaining additional rep and badges. Although it can't be assumed that every other unanswered question's OP is still around, we can still answer them in the hopes that the OP will eventually see them.
Should we bother reviewing these questions? If not, should we just have them deleted since the nature of closure (until the question can be answered again) wouldn't matter? Or should we leave them alone for someone to review them anyway?