Would an option of flagging questions as needing Migration in addition to the the Offensive and Spam categories help the moderators in triaging flagged questions more efficiently?
All of the posts I have flagged have been migrations and the only sensible option left is Requires Moderator Attention. I'm not sure how much other use of the Requires Moderator Attention there is apart from flagging questions for migration. You could still enter information on why the question has been flagged much as you do now with the Requires Moderator Attention.
Update: I asked this question because I don't have enough rep to vote to close questions but still want to participate with flagging questions. I thought that having another category might help the moderators with the number of questions they need to deal with.