A proposed wording for our "out of scope" close reason is being constructed at this other meta question but it needs some links to be considered ready to go. I've simply linked to the help page What questions can I ask about here? but some of you may know of some meta articles to link to for even more in-depth detail. Or this may be all we need. The wording was started by Skooba and is now a community wiki, so you can edit it yourself.
Nearly two years on from the initial discussion and we still don't have our third 'custom close' reason.
Not to fret though, because out of the last 55 questions that were closed 'with community-specific reasons', a huge proportion of them (more than 80%) were closed with the reason...
This question does not appear to be about Science Fiction or Fantasy, as defined in the [FAQ] and Help Centre
...or some variation thereof.
So it seems that we don't need to bother creating a new custom reason since the community has just gone ahead and done it all on its own.