This question is prompted by the creation of the inverted-flight and its addition to a few old questions.
This has raised a few eyebrows, since the actions basically swamped the homepage for a while. (This is the result of the edits mixed with the fact that we don't have a huge amount of traffic, meaning that edited posts tend to stay on the homepage for a while)
Moreover, some think that the tag might not be useful/necessary.
So, this brings us to the question: as a community, what is the preferred way in which we would like users to proceed, if they think a new tag is needed on several old questions?