Restrict certain types of VTC votes on questions to users who have passed a minimal positive threshold of question asking activity.
Rationale and Details
One of the things in Stack Exchange mechanics that makes it work is that the more you participate in the site's activity, the more you show yourself as being good at it; and (as reflected in your increased rep as a proxy for such) you are given more rights to do things (edit, then close, then delete).
Over the years of participation on this SE, I have observed a troubling phenomena - people severely denigrate and criticize other people's questions (from mere downvotes, to un-warranted VTCs such as "unclear what you're asking" or "opinion based", to un-constructive comments that the question is "useless", "boring" or "un-interesting", to similar comments in chat, to Meta posts).
What makes the phenomena troubling is not the criticism itself - but the fact that it often comes from people who have themselves NOT shown any specific interest or expertise in asking good/interesting questions on this site, as evidenced by them asking almost no good (or any) questions of their own. Sometimes they are great contributors to the site by answering - and sometimes barely participate in the site at all.
As such, I would propose that we - if technically possible - restrict certain types of VTC votes on questions to users who have passed a minimal positive threshold of question asking activity - e.g. at least X questions with at least Y score (Say, >=10 questions with score 5+ each but I'm not very hung up on specific #s).
This rule would not apply to all types of VTC - for example, "Duplicate" vote should remain unrestricted as the expertise to find duplicates is uncorrellated to being able/interested in asking your own questions. Perhaps Off-Topic as well.
However, "primarily opinion-based" and especially "too broad" and "unclear what you're asking" seem to require at least some successful experience in writing your own questions to understand the difference between a question that's truly too broad vs. merely imprecisely worded; between "I am curious about this slightly hypothetical sutuation that is quite plausible in canon" vs "I want to facilitate discussion about opinions where no answer can be 'correct'"
As a side note, while I was too lazy to actually go and run Data Exchange statistics, from personal observation this new rule - if agreed to - would not really be a big burden. There are very few people who VTC questions yet don't bother asking their own, and I can only think of 2 counter-examples where this would false-flag a user who clearly has question asking expertise yet chooses to not ask too many.