This is as a much a response to @Aarthi's comment as it is the original question:
We've recently, strongly, and (I would say) successfully moved away from meta-tags such as "strategy" and "rules". One of the results is that, for many questions, the name of the game is the only appropriate tag. Glancing at the questions on the front page shows a lot of questions with only one tag (and a few that have two, for a base game and expansion).
MCeley then has an excellent point: if a new user asks a question about a new game, the form requires that it have at least one tag, but what should it be? Something general, like "strategy" is a now-frowned-upon meta tag. The name of the game hasn't been created yet, so a new user can't use it, I think a retag tag is a good solution. My guess is most retags won't last more than 30 minutes before someone creates the appropriate tag.
My biggest concern is that new users won't know to use the retag, and I'd go so far as to ask for an additional feature request: a note on the Ask Question page for users unable to create tags instructing them of this convention.