Would it be technically feasible to not bump old posts onto the front page when the only edit to a question was to its tags? I ask because as of right now, only 3 posts on the entire front page are there because of new "content" (question, answer, etc.). The rest are old questions, most of which have good accepted answers, which are only there because users are going through older, poorly tagged questions and updating them. While I agree this is helpful and will improve future searches, it has also bumped off a great many questions that were still in need of an answer and were only a half-hour old, which is fairly new for this site. And while it's particularly bad right now, this isn't the first time I've seen similar issues.
If it is technically feasible, would people be supportive of such a change? Obviously it could have a downside of not pushing up questions that are new to a category, and thus might be new to someone who only watches certain tags, but I think on the whole the pros far outweigh the cons.
If it's not technically feasible, would it be suitable to establish some sort of guideline for retagging to limit it to a handful at a time? I hate to constrain those willing to do such work, but I'm afraid the current method will do more harm than good.