First, I hope that the request is appropriate and asked at the right place. If you have any issue with it, remarks are warmly welcomed.
When flagging a question for "Off-topic > This question belongs to another SE site", the possible choices include Meta.MO, Maths.SE and Cross Validated. Would it be possible to add Academia.SE in this list, please ? In the same vein, adding MathsEducators.SE sounds right, as both of these websites are closely tied to MO (though I must admit I'm not quite aware of the current state of ME.SE, so this last proposition may be a bit premature).