I think many users of this site believe that the of PSQs, especially on uninteresting math content wise questions, is a problem.
I believe the current methods of dealing with the problem are, mostly, based on discouraging the answerers, please correct me if I am wrong, many of the PSQs obtain an answer, before closing/holding, with high probability.
Furthermore, I am not convinced whether the current methods discourage, sufficiently enough, the answerers.
IMO one of the main reasons that the question askers are not discouraged by the current practices is that their primary motive for asking them is obtaining an answer.
I was wondering if you think a prioritized review sequence would make sense. I haven't worked out the specifics fully, but roughly the criteria for this list could be: off topic questions before an answer has been submitted. This new category could appear in the review queues or somewhere else. Another idea, would be that a user can nominate the question to be included in the expedited category, as the nomination criteria should optimize the un-cluttering of the list and the nominated question being a worthy member of that list.
I am not sure in practice if a version of the previous idea could work, or exactly what would be the costs of such implementation.