On Parenting.se we did a title cleanup effort several months ago.
This coincided (roughly) with the original formation of the CHAOS team, and the intent was to raise the readability of title content to improve search engine results.
However, in doing so, we wound up editing quite a few older questions, which bumps them to the top of of the "Active" question feed.
I have noticed that there are quite a few questions on Scifi.se with titles that do not meet the criteria we established (complete sentences, proper grammar, phrased as a question when possible, and matching tags where appropriate).
Now that we've graduated, it might be worthwhile to revisit some of the question titles and improve them. However, doing so will bump old questions to "recent" status. This will disrupt the "Active questions" sorting, and will also disrupt the "recent question" RSS feed.
Given these potential issues, is it worthwhile to make a concerted effort to improve the quality of some of our older question titles?