One of the tools that diamond moderators have at their disposal is the post notice. We have several different types of post notice for example, this one, for posts that require additional citations:
Some of the information contained in this post requires additional references. Please edit to add citations to reliable sources that support the assertions made here. Unsourced material may be disputed or deleted.
These appear below a post and call to action that it needs improvement. You can see this post for an example.
Unfortunately, we currently don't have a post notice that handles the topic of subjective support well according to our principles of Good Subjective, Bad Subjective. Those principles are also covered in these related metas:
- How do we ask and answer subjective questions?
- What are the citation expectations of answers on RPG Stack Exchange?
Currently, we are forced to use other notices, such as the one above, to handle flags on problematic answers with regards to subjective support.
Our main goal for this notice is that it helps to inform people about our requirement that all posts are to be backed up and gives them information on how best to achieve that specifically for subjective content.
With that in mind, the moderators have gotten together and put together a proposal which I have put below in the answers. Please vote on it as you deem fit and comment with any suggestions. Additionally, if you have a better proposal (or some sort of other major point to make), feel free to offer it up as your own answer as usual.