Requested feature overview description.
Basically, in addition to the malicious/abuse reasons listed in the report post page, one more is added that reads "Tag Ruling". The intended use of this is to request an admin to make a judgement call on whether a tag is correct or not, instead of using a more severe report reason that may be invalid.
Why would it be useful?
First and foremost, using this report function is an anonymous way to voice a concern over the tags on a post. This helps prevent user-to-user arguments over what tag is right, and if an admin acts then it will also preemptively stop a possible "tag war" between users and users.
Secondly, this is a helpful way to cite an admin's decision on a post. Since only staff members can lock tags, you can often find unspoken tag locks; this circumvents messaging the admin or looking through comments for their reasoning (in no particular order). Mind you, the admin or a witnessing viewer would have to link it somewhere, so this is of lesser value.
Finally, this combats directly the aforementioned "using a more severe report reason that may be invalid". This is a reason explicitly for the questioning of whether a tag is correct or not, not a accusation that a user is abusing the tags in some fashion. Even I'm willing to admit that I've requested help with the report post function, often when no admin is on and messaging one will be more burden than benefit. I'd ask for help anyhow, but this is a more formal way to do it.
What part(s) of the site page(s) are affected?
Posts; Report Post menu; Tickets.
Updated