Some "questions" on metas really are announcements which ought to be pinned on top of meta question listsings for wider attention (or at least frequently bumped by Mr. Community).
What is meta?
- Any Stack Exchange user can ask a question
- The community provides support, votes on ideas, and reports bugs
- Your voice helps shape the way Stack Exchange operates
As others have said in the comments, I think this would pollute the questions list.
Have a ♦-only tag called announcement for such questions and have a widget on the home page (similar to the faq one):
We do have the [featured] moderator tag now on per-site metas.
It is not currently used to pin, but it does affect the meta house ad on the parent site.