Unlike what another answer suggests, I think that "continuum hypothesis" is not a good tag to use as a proxy here. 

Instead, I assume many of these questions would be about "cardinal characteristics", so maybe we need such a tag. It seems to me it would be more useful than the proposed tag which seems a bit vague to me. I understand that "cardinal characteristics" may be specific enough that a few questions that would use the "vague" tag may be left out, but it seems like a useful compromise.