Retagging questions currently moves them to the top of the active questions list. (I'm not sure, but I think this move may be a result of the retag function having been merged with the edit function.)
It may be reasonable for normal edits to appear at the top of the active questions list because they edit the actual content of the question. Moving content edits to the top of the list helps maintain an element of peer moderation.
However, moving retagged questions to the top of the list is problematic for two reasons.
- It buries questions that have had their actual content changed, including posts that are completely new. If used properly, tags should only help to find questions, not to change their meaning, so there's no need to place them in this queue.
- It enables users to get a couple of free votes just by retagging one of their questions or a question for which they have a popular answer. (I've done this sporadically, and I've seen others doing it as well, but I don't think it should be possible to game the system in this way.)
My feature request: questions that have only been retagged (but not otherwise edited) should not be moved to the top of the active questions list.