I just ran into a question asking to place a couple dozen notes described in scientific pitch notation onto a scale. That's obviously someone trying to get the community to do his homework for him, and obviously off topic. Are those common enough to deserve their own close reason, or uncommon enough to just be dropped into the "other" category?
So far we haven't had many of them, so I reckon just using free form text to say why you are voting to close will be fine. If we get a lot of them we can look at adding a custom close reason.