Note that this is NOT only about points. The "duplicate" question is asking for a SO reputation-based limitation. This is asking rather for a more sophisticated conditions.
I have had a very bad experience with some newbies in different areas which clutter my question with invalid answers and comments on an expert topic, then start a useless discussion, and vote down in the end.
I don't mind them voting down, but I am getting tired of asking people not to answer with "Wrong and obvious answer 1" or "Wrong and obvious answer 2", and then explaining to them why their answer is not what I need, because they don't even know enough about the topic to get the question. This is simply not how Stack Overflow should work.
I'd like to be able to set some (per-question) limits on ratio of accepted answers to certain tags, or ratio of upvotes vs. downvotes on some tags, or other criteria, to allow the user to answer (NOT vote). I'm okay with getting fewer but higher-quality answers rather than (just as a made up example) something like "You can't do
sqrt(-1)", which ignores irrational numbers.
Is that possible now? If not, may I suggest that?