Problematic articles
Either way would be fine with me. In practice, we probably need to combine both, since it is unreasonable to vote for every stub to determine it is a stub. After flagged revisions have been introduced, editors are actually entrusted by the community to decide which articles are sub-standard and which are ok, and we can tie the baseline quality criterion with this level - then an editor decides whether the article is of baseline quality. May be for some other levels we may use trusted users as discussed in another tread,; for some problematic cases we may even need real experts. I believe some of this stuff can be delegated to the Wikimedia-wide-projects, but I do not think it is a good idea if the projects decide for instance what is baseline quality.